Signs for technical/specialized vocabulary

David Bar-Tzur

Links updated monthly with the help of LinkAlarm.

embryo Illuminated letter Edam, an engineering feat

Embryo1; engineering.

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

EXPLANATION OF THE GLOSSING SYSTEM
(to understand how I describe the signs in this dictionary).

For content knowledge of how to use the physics terms in context, see Guided tutorial in physics for interpreters.

For negotiating and developing temporary signs, see Preparation and sign negotiation

For vocabulary lists to determine helpful signs for a specific discipline, see Vocabulary lists by topic.


eagle
[X dot] taps at nose like a beak. For a video of this sign, "eagle" ASL American Sign Language.

ear

earphones
Depending on the size of the earphones, from largest to smallest, (2h)[5:] or (2h)[O^] or (2h)[bO] surround or are inserted into respective ears.

earrings

easel
FT of [H] strike mid-palm of [B], FOs of both diagonally up, as if the [H] were the supporting legs for the easel.

Easter
(1) (2h)[E], supinate or pronate several times. (2) (1h) version of (1). (3) (2h) [E] arcs > their respective sides. (4) (1h) version of (3). (5) E-EGG. For a QuickTime movie of this sign, see ASL browser - Easter.

Eastern Catholic
O-CLEAN.

Eastern Orthodox
O-CLEAN.

eat away at
[5:] touches FT to palm of [B], PO > DS, FO up, and DH closes and opens as is travels up the palm, as if taking small bites of it, while gnashing the teeth with each bite.

eccentricity (ellipse)
CENTER OFF-POINT, where the second sign is [S], PO > NDS, FO away, flicks index finger when it arrives at NDH [1], PO > DS, FO up.

eccentricity of orbit
ORBIT HOW-MUCH OFF-POINT COMPARE CIRCLE. ORBIT is [1^], PO down, FO away, circles NDH [A], PO > DS, FO away, from above.

Ecclesiastes [Heb. Koheles, Kohelet(h)]
E-C-C-L.

eclipsing binary system
(2h)F-CL' hands cross with DH closet then with NDH closer' DOUBLE STAR SYSTEM.

E coli
"E" C-O-L-I.

economics, economy
[E], PO up, FO away, taps against the palm of NDH [B], PO away, FO away. For a QuickTime movie of this sign, see ASL browser - economy.

economies of scale
"E" "S".

ecstasy (drug)
(1) X-T-C. (2) "X". (3) TRAIN. (< "riding the e-train.")

Ecuador
E-GROUP, that is (2h)[E], POs away touch at thumbs, separate and come together with POs towards and touching on the pinkie side. To see the reference source for the sign(s) for this country or to look up other countries in the same geographical area, see Indigenous signs for countries. To find signs for cities within this country (some have no entries) see Indigenous signs for cities.

ecumenical
CHURCH VARIOUS, BRING-TOGETHER-IN-GROUP, where the last sign is (2h)[C], POs ><, FOs away, are brought together. If a religion other than Christianity is meant, substitute RELIGION for CHURCH.

edema
BODY WATER GET-FAT'puff cheeks'.

edge weld
(2h)[Bb], POs down, FOs away, held at waist level, are slapped together at right angles as if joined and the NDH stays in place while the DH [L] runs up and down the index finger of NDH as if welding it.

edit
[V] snips at [Bb], PO down.

editor

education
(2h)[E], POs ><, FOs up, start by temples and move out, changing to (2h)[D].

effect(s)
[O^], PO down, brushes against the back of [B], PO down, while opening into a [5] 2x.

effective
SUCCEED.

effective current (Ieff)
I E-F-F"subscripted".

effective interest
REAL INTEREST, where the latter is [I] rubs little finger side against NDH [I], PO down.

effeminate
(2h)[F], FO up, alt. move to and fro at elbows in an effeminate manner with hu.

efferent
DH flicks fingertip down the arm, as if a signal were traveling along a nerve down the arm.

efficient, efficiency
(1) SKILLED USE. (2) SUCCEED. (3) SKILLED, that is, [B^] grasps [B] on both sides and pulls forward while [B] remains in place. For a QuickTime movie of this sign, see ASL browser - efficient.

effusion (chemistry)
NDH [F], PO > DS, FO up, DH [S], PO away, FO up, is held against the "hole" of NDH and moves away while opening to [5] and wg. This show a gas escaping from a small aperture.

egg (human)
EGG + (2h)[1] point to the place of the respective ovaries.

Egypt (مصر)
(2h)[B] rise to touch FTs at an angle, like the peak of a pyramid. For a film of this sign, click on Egypt (مصر).

Eichah
L-A-M.

einsteinium
E-S. For more information on this and other elements, see The elements. And for fun, see Elements by Tom Lehrer. To see this song with captions, go to The Elements song by Tom Lehrer.

EISA configuration utility
E-C-U.

ejaculate, ejaculation
NDH holds index FT against wrist of [S], PO > DS, FO away, with puffed cheeks, then "pow" is mouthed while DH opens to [5] while moving forwards explosively several times.

ejecta
[S] strikes back hand of [B], PO down, FO > DS + with NDH still held in place, sign MATERIAL, that is, (2h)[bO], POs up, FOs away, are held in together in place while thumbs rub against FTs.

El
GOD.

elaborate

elastic

elastic clause (laws that are necessary and proper)
FLEXIBLE C->L-SENTENCE, that is, [Bb], PO > NDS, FO away, grasps FTs of [B], PO > signer, FO > DS, and wiggles it back and forth, showing its flexibility + (2h)[C], POs><, FOs away, touch FTs, then separate while changing to (2h)[L].

Elder

elect, Elect

election
(1)VOTE, that is, [F] puts ballot into [C], PO > DS, FO away, with double movement. (2) Thumb and index finger of [F] close on something and brings it to [B], PO away, FO up. (3) [G] closes on something and brings it to [B], PO away, FO up. For a QuickTime movie of this sign, see ASL browser - election.

elector
APPOINT + AGENT, where the first sign is PICK but DH slams thumb side against NDH [B}, PO away, FO up.

electoral college
APPOINT COLLEGE or GROUP, where the first sign is PICK but DH slams thumb side against NDH [B}, PO away, FO up.

electrically alterable read only memory
E-A-P-R-O-M.

electrically available read only memory
E-A-R-O-M.

electrically erasable programmable read only memory
(1) E-2-P-R-O-M. (2) E-E-P-R-O-M.

electrically programmable logic device
E-P-L-D.

electrical overstress
E-O-S.

electric conductivity
Draw a lowercase sigma (lowercase sigma) in the air.

electric field
ELECTRICITY INFLUENCE"all".

electric field intensity
"E" is shaken underneath [1], PO down, FO > DS, like an E vector.

electric flux density
"D" is shaken underneath [1], PO down, FO > DS, like a D vector.

electric outlet

electric plug

electric potential
ELECTRICITY POSSIBLE.

electrocardiogram
E-C-G.

electroconvulsive therapy
E-C-T.

electrode (Engineering)
(2h)[X], POs facing, FOs ><, tap FTs together 2x + (2h)[X], POs ><, FOs up, are placed next to one another to represent electrodes.

electrode (Welding)
NDH is [1], PO down, FO > DS. DH [B], PO down, FO away, runs palm across the top of the index finger with a slight arc to cover the top half of the surface.

electrode holder (Welding)
NDH is [1], PO down, FO > DS. DH [B], PO down, FO away, runs palm across the top of the index finger with a slight arc to cover the top half of the surface + HOLD.

electroencephalogram, electroencephalograph
E-E-G.

electroluminescent
E-L.

electrolysis
E-L-E-C-T-R-O-L-Y-S-I-S.

electrolyte
ELECTRIC CHEMICAL.

electromagnet, elctromagnetic
ELECTRIC(x1) + MAGNET.

electromagnetic force
E-M-F.

electromagnetic interference
E-M-I.

electromagnetic pulse
E-M-P.

electromagnetic radiation
ELECTRIC(x1) MAGNETIC + NDH [S], PO down, FO > DS, DH [5] is held over NDH and wiggles while rising to show radiation.

electromotive force
E-M-F.

electron
(1) "E". (2) "E" NEGATIVE. (3) "E" PARTICLE.

electronic
(2h)[X], POs facing, FOs ><, tap FTs together 2x. For a QuickTime movie of this sign, see ASL browser - electric.

electronic balance
ELECTRIC BALANCE.

electronic data processing
E-D-P.

electronic funds transfer
E-F-T.

Electronics Industries Association
E-I-A.

electronic warfare
E-W.

electron neutrino (nue)
Draw a nu in air + E"subscripted".

electron volt
E-V.

electrostatic discharge
E-S-D.

electrostatic discharge sensitive
E-S-D-S.

electrostatic flux
Same as the sign PSYCHOLOGY (some people start this sign with THINK, in which case I mean the later half of the compound.)

electrostatics
ELECTRICITY STAY.

electrostatic sensitive device
E-S-D.

El Elyon
GOD + [A dot], PO > NDS, moves from DS upwards in an outward arc.

element

elemental (for example, "~ gallium")
SINGLE ATOM.

elementary school
E-BASIC, PO away.

elevation

Elevation of the Cross
TRUE CROSS FIND DAY, where the second sign is [C], PO away, travels down, then returns and moves from NDS to DS, tracing a cross in the air. For an animated gif of this sign, see Animated dictionary of religious signs - Deaf Missions: Cross..

eligibility
FT of [F] pull at shirt/blouse several times + CAN+.

eligible
FT of [F] pull at shirt/blouse several times.

Elijah
[E], PO away, FO up, moves under [B], PO down, FO > DS, and past it.

eliminate

ELISA (enzyme-linked immuno-sorbent assay)
E-L-I-S-A.

Eliyahu haNavi
E-PROPHET.

ellipse
1outline-CL'draw ellipse'.

ellipse, horizontal
[1] draws a horizontal ellipse.

ellipse, vertical
[1] draws a vertical ellipse.

elliptical galaxy
[5:], PO up, FO away, is held above [S], PO down, FO away. DH descend and strikes NDH while closing to [S] + (2h)[C], POs ><, FOs away, hands rush together (GRAVITY GROUP-TOGETHER = GALAXY) + (2h)[C] from before flatten slightly.

Elohim
GOD.

elongation
(2h)[5], touch FTs and separate while closing to (2h)[O^].

El Salvador
(2h)[A], POs down, DHFO > NDS, brushes away from signer 2x with heel of palm on NDHFO > DS. To see the reference source for the sign(s) for this country or to look up other countries in the same geographical area, see Indigenous signs for countries. To find signs for cities within this country (some have no entries) see Indigenous signs for cities.

El Shaddai
GOD HAVE ALL POWER.

Elvis
An interesting Dutch sign might be useful: [bC] traces his long sideburns. FROM http://www.effathaguyot.nl/index.php?stab=1&signfirst=E (Effatha - Gebarenboek), which is no longer extant.

e-mail

embezzle
MONEY + (2h)[5:], POs down, grasp something below and pull it up. For a QuickTime movie of this sign, see ASL browser - embezzle.

embryo
E-M-B-R-Y-O.

emergency department, ED
E-D.

emergency room, ER
E-R.

eminent domain (powers to take private property)
PRIVATE PROPERTY, TAKE-AWAY CAN.

emission nebula
[S], PO > NDS, FO diagonally away, is held inside of [C], PO up, FO diagonally away, and DH flicks index finger out + CLOUDY, where the second sign is (2h)[O^], NDHPO towards, DHPO away, touch at FTS , then move to opposite sides while opening to (2h)[5].

emission spectrum
SPECTRUM SPARSE-spectrum. That is, NDH [5], PO towards, FO up and DH [B], PO > NDS, FO up. DH pivots at wrist and moves back and forth across ND FTs as if they were gradations on the spectrum + with NDH held in place, the [S] flicks index finger three times while moving from thumb to little finger showing that only discrete points are meant.

emitter

emitter coupled logic
E-C-L.

Emmanuel
GOD WITH US.

emotion
(2h)[E], alt. circle while brushing FT up chest.

emotional
(2h)[5:], alt. circle while brushing FT up chest.

emotional abuse (psychological, mental cruelty)
PICK-ON"over time + sta".

emotionally disturbed
EMOTION PROBLEM HAVE.

empathy
FEEL you-SAME-AS-me, where the second sign is (2h)[Y], POs ><, FOs up, hands move back and forth between signer and the person being empathized with.

empire
E-KING.

empirical
INVOLVE EXPERIMENT.

employee
WORK AGENT.

employer
(1) HIRE/INVITE AGENT. (2) BOSS.

employ (hire)
HIRE.

employ (a resource)
USE.

employee
WORKER.

employer
(1) HIRE AGENT. (2) BOSS.

employment

employment specialist
(1) WORK MAJOR, where the second sign is [Bb], PO >NDS, travels away along the edge of [Bb], PO > DS, FO away. (2) WORK SPECIAL + AGENT.

empower
[C], PO towards muscle, is held above NDS bicep. This [C] is then moved so that the PO is towards whoever is being empowered.

empty (trash or recycling bin, v, computers)
(2h)[C] hold garbage can, then turn it over and shake it out.

(the) empty string
Draw a lowercase lambda (lowercase lambda ) in the air.

emulsion
[E], PO away, FO up, slides across the forearm of [B], PO down, FO > DS.

enable
ALLOW.

enabled (computers)
ALLOW FINISH.

enchant
(2h)[5], POs down, FOs > signer, FTs flutter and head moves backwards. For a QuickTime movie of this sign, see ASL browser - bewitch.

enchanted
[5] points its FT > the signer's face, FT flutter and hand moves away from face with the face following after it and the hand closes to [S], PO > NDS, FO up, with thp.

encode
E-CHANGE.

encoding
E-CHANGE++.

encourage
(2h)[B], POs away, FOs down, hands are held low and circle repeatedly as if pushing something forward.

encrypt (v)
TRANSLATE + (2h)[1] cross at midfinger and wiggle as hands move together towards DS.

encryption
(2h)[1] cross at midfinger and wiggle as hands move together towards DS.

enculturate, enculturation
GROW-UP THAT CULTURE.

encyclopedia
[E], PO up, circles while brushing the palm of [B], PO up, FO away.

end

endangered species
THAT KIND BY-A-HAIR GONE, the last two signs are, BY-A-HAIR: [F] pulls a hair from scalp with a sudden movement, and GONE: [5], PO towards, FO up, descends in front of [B], PO towards, FO > DS, while closing to [O^].

endemic
AREA TEND POSS.+

ending (grammar)
[B], PO > signer, FO > NDS, brushes twice against FT of [B], PO > signer, FO > DS, while descending.

endocardium
(2h)[B], POs down, hands overlap completely at nose, DH on top. DH ascends + INSIDE.

end of file
E-O-F.

end of line
E-O-L.

end of tape
E-O-T.

end of transmission
E-O-T.

endoplasmic reticulum
E-R.

endothermic
HEAN IN++.

endpoints
END (2h)alt.INDEX

energy
[E] touches thumbside to shoulder and travels in upward arc across bicep, then touches arm with little finger side.

energy source
ENERGY, START PLACE. Some people sign START, but that's a verb and "source" is a noun.

engaged
ENGAGEMENT (see entry) FINISH INDEX.

engagement
[E], PO down, circles and lands on ring finger of NDH [5].

engage the clutch
(2h)[B], POs away, FOs up, left hand moves down at an angle as if stepping on the clutch.

engine
(2h)[5:], POs towards, interlace FTs and twist at wrists so that the hands travel up and down. For a QuickTime movie of this sign, see ASL browser - engine.

engineering
(2h)[Y], POs down, FOs away, touch FTs and twist antisymmetrically while maintaining contact. For a QuickTime movie of this sign, see ASL browser - engineer.

engineering change order
E-C-O.

England
(1) (2h)[1], POs > signer, but forming right angles so that FTs can point outward diagonally. DH slides its index finger along NDH's index several times. (< the index finger is an "E" in British fingerspelling.) For an animated gif of this sign, see BritishSignLanguage.com. Click on "List of words" - "England." (2) [bC] or [bC dot], PO towards, FO > NDS, strikes chin. (< strap on the fur hat of palace guards.) For a QuickTime movie of this sign, see ASL browser - Great Britain. To see the reference source for the sign(s) for this country or to look up other countries in the same geographical area, see Indigenous signs for countries. To find signs for cities within this country (some have no entries) see Indigenous signs for cities.

English
(2h)[B], POs down, FOs away, DH wraps its fingers around NDH from above and shakes it slightly.

English-based signing
ENGLISH SET-UP SIGN. SET-UP = [A] twists then stamps the wrist of NDH [S], PO down, with it's small finger side.

enhanced graphics adapter
E-G-A.

enhanced industry standard architecture
E-I-S-A.

enhanced small device interface
E-S-D-I

enjoy
Palms of (2h)[B] rub chest in independent circles.

enlarge
(1) (2h)[5], PO ><, FO away, separate suddenly in upward arc. (2) (2h)[L:], PO ><, FO away, separate suddenly in upward arc. For a QuickTime movie of this sign, see ASL browser - enlarge.

enlarger
(2h)[5], POs ><, FOs away, separate + MACHINE.

enlightenment, Enlightenment

ensemble
ACT GROUP.

enter (use a keyboard)
(2h)[5], POs down, FOs away, descend while while fluttering.

enter key
ENTER K-E-Y.

entertainment
(1) PERFORM. (2) ENJOY.

enthalpy
"H".

enthusiasm, enthusiastic
(2h)[B], POs ><, FOs away, alt, move back and forth while rubbing palms. For an animated gif of this sign, see Animated dictionary of religious signs - Deaf Missions: Zeal.

entreat, entreaty
BEG.

entrepreneur
E-BUSINESS.

entropy
"S".

entry

environment
E-SITUATION. For a QuickTime movie of this sign, see ASL browser - environment.

enzyme
E-NEAT.

enzyme-linked immuno-sorbent assay
E-L-I-S-A.

epée
[A] twists and moves forward as if holding a sword.

Ephesians (Πρὸς Ἐφεσίους)
E-P-H.

ephphatha
(2h)[Bb], POs away, are held at ear and suddenly supinated like EAR-OPENED.

epiclesis
SUMMON HOLY SPIRIT.

epidemic
SICK SPREAD*. For a QuickTime movie of this sign, see ASL browser - epidemic.

epiglottis
Run FT of index finger down upper side of throat, then put thumb side of [N] against throat and wg FT.

epilepsy
[V], PO down, FO away, is held next to DS of mouth and curls to [V:].

Epiphany
(1) [O^], PO > signer, pronates while opening to [5^]. (2) JESUS SHOW DAY.

Episcopal
(1) [1] traces the outline of a puffed sleeve from wrist to elbow. For a QuickTime movie of this sign, see ASL browser - Episcopal. (2) [E] traces the outline of a puffed sleeve from wrist to elbow.

epistle
(1) LETTER(mail). (2) [E], PO > signer touches mouth and then ND [B], PO up, without pronating.

epsilon (lowercase, lowercase epsilon)
Draw the shape of the letter in the air.

equal
(2h)[B^], POs ><, FOs up, tap FT together 2x. For a QuickTime movie of this sign, see ASL browser - equal.

equal arm balance
(2h)[B^], POs ><, FOs up, are held side by side and ascend and descend slightly and asymmetrically.

equality (Math)
EQUAL (1x) SENTENCE.

equalizer
E-Q.

equation

equator
EARTH + (2h)5:-CL'ball' + 1-CL'shows equator line while NDH is held in place'. For a QuickTime movie of this sign, see ASL browser - equator.

equatorial diameter
2h)5:-CL'ball' + 1-CL'shows equator line while NDH is held in place, then show diameter perpendicular to the signer's chest'.

equilateral
E-Q-U-I-L-A-T.

equilibrant
OPPOSITE, BALANCE.

equilibrium

equilibrium constant
"K".

equipment cage
(1) (2h)[V], POs > signer, FOs crossing, NDH is held in place while FT of DH tap FT of NDH from behind. (2) DH [V], PO > signer, FO up, taps on backhand of [S], PO > signer, FO > DS + ROOM.

equity
"E".

equivalence, equivalent
EQUAL is signed on the NDS then moved to the DS and signed again.

equivalent series resistance
E-S-R

-er (suffix)

erasable (computers)
Rub palm side of [A] against palm of [B], PO up, FO away + CAN.

erasable programmable logic device
E-P-L-D.

erasable programmable read only memory
E-P-R-O-M.

erase
Rub palm side of [A] against palm of [B], PO up, FO away.

erbium
E-R. For more information on this and other elements, see The elements. And for fun, see Elements by Tom Lehrer. To see this song with captions, go to The Elements song by Tom Lehrer.

erect image
IMAGE + (2h)[1], NDPO down, touches the bottom knuckle of DPO away, FO up.

erection (sexual)

erg
E-R-G.

erode, erosion
WATER + [5:] touches FT to palm of [B], PO > DS, FO up, and DH closes and opens as is travels up the palm, as if taking small bites of it, while gnashing the teeth with each bite. If the eroding agent is something other than water, replace WATER with its name.

erogenous zones
BODY AREA TOUCH, GOOSE-BUMPS, where the last sign is (2h)[S], DHPO > ND arm or away, DH slides along ND arm while opening to [4] and hu.

errands
(2h)[D], POs > signer, FOs up, move in a horizontal circle while closing fingers multiple times to (2h)[O^].

error

error checking and correction
E-C-C.

erupt
GROW*. For a QuickTime movie of this sign, see ASL browser - erupt.

erusin
ENGAGEMENT.

eruv
E-GROUP.

escape velocity
ESCAPE "V".

eschatology
STUDY WHEN JESUS COME "WHAT"?

Escherichia coli
"E" C-O-L-I.

esophagus
FRONT + F-CL runs down throat to midchest.

ESP
(2h)[S], POs down, FOs ><, DH holds back of hand against DS temple and NDH is held opposite it. Both hands flick out index fingers twice directly at each other.

espionage (Criminal Justice)
NDH [B], PO > DS, DH [V] peeks around corner of wall. For a QuickTime movie of this sign, see ASL browser - spy.

espresso
NDH [S], DH [X], POs ><, FOs away, DH circles on top of NDH as if grinding. (< COFFEE and [X] represents the steam wand.)

essay
E-S-S-A-Y.

-est (suffix, superlative)
(1) MOST + adjective. (2) [A dot], PO > NDS, FO away, moves upwards in large movement.

estate
E-S-T-A-T-E.

esteem
(1) PROUD. (2) [O^], PO > NDS, FO up, is held against chest and opens to [C] with thumb still in its original place. (3) Same as (2) but NDH [B], PO down, FO > DS, is held under DH.

Esther [Heb. Ester]
(1) E-S-T-H. (2) E-QUEEN.

estimate
GUESS. For a QuickTime movie of this sign, see ASL browser - estimate.

estranged (husband and wife)
(2h)[1], POs down, FOs away, move forward while separating and altering FOs to sides. For a QuickTime movie of this sign, see ASL browser - estranged.

eta, eta
Draw the shape of the letter in the air with the index finger.

eta-c meson (etac)
Draw an eta in the air + [C]"subscripted".

eta resonance meson (eta)
Draw an eta in the air + R-E-S-O-N-A-N-C-E.

Eternal, the
ALWAYS + DH produces STILL in the usual way, and the NDH produces STILL so that it moves back over the shoulder.

eternal life
LIVE FOREVER.

eternal light
LIGHT-SHINE-DOWN CONTINUE++.

ethanol gycol
E-G.

ethical
FOLLOW ETHICS.

ethics
(1) E-T-H-I-C-S. (2) E-LAW, that is, [E], PO away, FO up, touches upper palm of [B], PO > DS, then lower palm.

Ethiopia
(1) [E], PO > NDS, starts at forehead and travels back over head. (2) [E], PO > signer, circles forehead. (3) [A dot], PO > NDS, circles face and touches nose with the thumb which is still extended. (< The initial letter of the name in the Geeze alphabet.) To see the reference source for the sign(s) for this country or to look up other countries in the same geographical area, see Indigenous signs for countries. To find signs for cities within this country (some have no entries) see Indigenous signs for cities.

ethnocentric, ethnocentrism
POSS. CULTURE + (2h)[B] are held at the side of the respective eye like horse blinders.

ethnography
E-T-H-N-O-G-R-A-P-H-Y.

etiology

etiquette
FORMAL.

eucaryotic
E-U-C-A-R-Y-O-T-I-C.

Eucharist
(1) (HOLY) BREAD. (2) [F], PO > signer, makes the sign of the cross at the mouth. (3) E-CROSS. (4) (2h)[F] is held together at thumbtips and is lifted up. (< the priest lifting the host.) For an animated gif of this sign, see Animated dictionary of religious signs - Deaf Missions: Eucharist.

Euchre
E-NUMBER.

European Space Agency
E-S-A.

europium
E-U. For more information on this and other elements, see The elements. And for fun, see Elements by Tom Lehrer. To see this song with captions, go to The Elements song by Tom Lehrer.

euthanasia
(1) PITY, KILL. (2) E-U-T-H-A-N-A-S-I-A.

evacuate

evaluate
(2h)[E], POs away, FOs up, alt. rise and fall.

evangelical, evangelist, evangelism
(1) E-PREACH. (2) E,V-PREACH(1x). (3) ANNOUNCE.

evaporate
(1) (2h)[open 8], PO down, circle antisymmetrically twice, then rise upwards while closing to (2h)[O^], repeat if ongoing. (2) [5], PO down, FO away, touches NDH [B], PO down, FO away from above and DH rises while wiggling DH fingers.

evaporating dish
BOWL + with NDH remaining in the final position for BOWL, DH [bC] touches FTs to those of NDH and moves > DS while closing to a [bO] to show the pouring groove.

evaporator (Automotive)
DH [5], PO down, FO away, rises up several times from NDH [B], PO down, FO away while wiggling DH fingers.

Eve (the First Woman)
[E] touches DS of chin with thumbside 2x.

even

evening gown
(FANCY +) (2h)[5] touch thumbs to shoulders and descend deeply and slowly.

event horizon
EVENT + [1] traces along dorsal surface of extended forearm, [B], PO down, FO > DS held somewhat high like the earth's horizon.

everlasting life
LIVE FOREVER.

evict
LANDLORD REJECT, that is, L-L + [8], PO down, is held in palm of NDH and flicks middle finger forward while DH also moves forward slightly.

evil
(1)BAD*. (2) DEVIL. (3) E-BAD. (4) SIN. (5) DEVIL DO.

eucharistic service (Eastern Orthodox)
(2h)[F] is held together at thumbtips and is lifted up + WORSHIP.

evaporating gaseous globules
E-G-G.

evolution (biology and general)
(2h)[open 8], DHPO down, NDHPO up, the two hands circle around each other as they move > DS and remain at their respective levels.

evolutionary track
E-CHANGE T-R-A-C-K.

exacerbate
MAKE WORSE.

exact
(1) (2h)[bX], DHPO away, NDPO towards, the union of the index finger and thumb circle that of the other hand and then land direct on it. For a QuickTime movie of this sign, see ASL browser - accurate. (2) Sometimes the word "exact" is differentiated from the word "accurate". Imagine a target where a gun aimed at the bull's-eye consistently hit the bottom of the target: the results would be "exact" in their consistency, but not "accurate". Although the sign we have used for "exact" is often used for "accurate" too, we could use the following sign for "accurate" to make a distinction: (2h)[1], DHPO down, NDPO towards, the FT of the index finger circles that of the other hand and then lands directly on it.

exaggerate
(2h)[S], POs ><, FOs up, DH is held in front of NDH and moves away in a jagged line (NDH static) with th.

exalt, exaltation
(1) (2h)[5], POs up, are raised high. For an animated gif of this sign, see Animated dictionary of religious signs - Deaf Missions: Exalt. (2) ADVANCED, that is, (2h)[B^], POs ><, FOs up, arc > signer a bit then move up in a definite movement. For an animated gif of this sign, see Animated dictionary of religious signs - Deaf Missions: Exalt.

exalted
NAME~SHINY, that is, sign TO-NAME(1x) and without moving the NDH, change the DH to [open 8] and twist at wrist while moving DH up and away.

examination (physical)
BODY CHECK.

excavate
[B^], FO away, scoops out the ground in front of it.

exception
EXCEPT.

excess (chemistry)
TOO-MUCH, that is, (2h)[B^], POs ><, FOs up, DH moves upwards with a definite hop.

exchange
TRADE.

(nerve) excitation
NERVE EXCITED.

excite (sexually)
(1) ENCOURAGE EXCITED with appropriate facial expression. (2) ENCOURAGE INSPIRED with appropriate facial expression.

excited (sexually)
(1) EXCITED with appropriate facial expression. (2) INSPIRED with appropriate facial expression.

exclusive-or
X-O-R.

exclusivism
MY BELIEF RIGHT SAY~PERIOD, where the last sign is [bX] touch FT to mouth and then pronates and places a period in (null) space.

excommunicate, excommunication
(CHURCH) REJECT.

excrete

exec (executive, computers)
E-X-E-C.

execute

executive

executive director
(1) FT of [5:] touch DS shoulder, then change to [A dot], PO > NDS, FO away, and rises in an outward arc + D-CONTROL AGENT. (2) E-X-E-C D-CONTROL AGENT.

executor
W-I-L-L CONTROL AGENT.

exegesis
(1) INTERPRET. (2) (MEAN) EXPLAIN.

exercise

exert a force
TRY FORCE.

exfiltration
NDH [5], PO > DS, FO away, DH interlaces its fingers with NDH, both at NDS, then DH moves > DS while fluttering FT.

exhale/inhale

exhaust (engine)
NDH holds onto wrist of DH [S], which opens suddenly to [5].

exhibitionism
(2h)[A] hold coat closed and open it suddenly with evil facial expression and tongue between teeth.

[there] exists (inverted E, math)
NDH [1] is placed behind fingers of [W], PO towards, FO > NDS.

exit (computers)
E-X-I-T.

Exodus

exorcism
FORCE BAD SPIRIT OUT-OF-BODY, where the last term is DH [V:] or [O^] is pulled out of a [C] with its FT touching the chest, FO > DS. In the case where [O^] is used, the DH opens to [5^].

exothermic
HEAT OUT++. The sign HEAT is not the same as HOT.

expand, expansion

expanded memory manager
E-M-M.

expanded memory specification
E-M-S.

expectorant
MEDICINE CAUSE + [S], PO down, FO away, is held at mouth and then moves forward while flicking out index finger onto [B], PO up, FO away.

expectorate
[S], PO down, FO away, is held at mouth and then moves forward while flicking out index finger as if spitting.

expelled
SCHOOL REJECT, where the second sign is (2h)[B], POs down, FOs away, but hands crossed with DH on top of NDH, DH pronates while scraping against NDH palm as it moves away and off the NDH.

expenditure
(1) BUY. (2) DH [O^], PO up, is held in palm of [B], PO up, FO away, and moves forward in upward arc while opening to a [B]. (3) (2h)[S], POs up, are held at pockets, flick out index fingers and move up.

expense
E-X-P.

experiment
E-SCIENCE.

experimental (not established)
EXPERIMENT DECIDE, NOT-YET.

expert
(1) SKILLED, that is, [B^] grasps [B] on both sides and pulls forward while [B] remains in place. For a QuickTime movie of this sign, see ASL browser - expert. (2) GOOD-AT, that is, closed FT of [F], PO > signer, FO > NDS, strike chin and stick.

explanation
EXPLAIN.

explicit
(1) STRAIGHT. (2) CLEAR.

explode, explosion
(2h)[S] are held low at chest and crossed at wrists. the hands rise and open to (2h0[5] while showing by mouth and facial expression the act of explosion. For a QuickTime movie of this sign, see ASL browser - explode.

exponent
E-X-P.

exponential (function)
E-X-P.

export
(2h)[O^], POs down, FOs away, are held high and the FTs are brought forward. For a QuickTime movie of this sign, see ASL browser - export.

expiate

export
(1) SELL (TO) FOREIGN. (2) ASL Browser has a QuickTime movie of a sign for this, but I can't see the difference between this sign and the regular sign SELL, see ASL browser - import.

expose

exposure (to illness)
[O^] points FT > palm of [1] and opens suddenly + HIT* SICK(, DON'T-KNOW). For a QuickTime movie of the first part of this sign phrase, see ASL browser - expose.

express
(2h)[S], POs > signer, FOs up, rise up chest and then move forward while opening to (2h)[5:], POs up, FOs away.

expressed powers (powers directly stated in the constitution)
POWER, DIRECT EXPRESS.

expression (part of an equation)
If the specific expression under discussion is known, describe the expression meant; if not - EQUATION.

expressionism
E-X-P-R-E-S-S-I-O-N-I-S-M.

extended binary coded decimal interchange code
E-B-C-D-I-C.

extended graphics array
X-G-A.

extended memory specification
X-M-S.

extended technology
X-T.

extension

extent (frequency loss)
E-X-T-E-N-T.

external
OUTSIDE.

externalities (Economics)
OUTSIDE INFLUENCE.

extinct
GONE, that is, [5], PO towards, FO up, descends in front of [B], PO towards, FO > DS, while closing to [O^]. For a QuickTime movie of this sign, see ASL browser - extinct.

extol
PRAISE FOR-FOR? LONG-LIST. The last sign is (2h)[O^], POs > signer, NDH is above and touches DH; both hands open to (2h)[5] while DH descends.

extract
(1) (2h)[V] point FTs at the thing one is extracting from and pull towards signer while bending FTs. (2) REMOVE.

extra high voltage
E-H-V.

extrapolate
FIND VALUE OUTSIDE.

extrasensory perception
(2h)[S], POs down, FOs ><, DH holds back of hand against DS temple and NDH is held opposite it. Both hands flick out index fingers twice directly at each other.

extrasolar planets
PLANET OUTSIDE OUR SUN SYSTEM, where the first sign is [P], PO down, FO > NDS, orbits around [1], PO > DS, FO up.

extreme close up
(1) E-C-U. (2) (2h)[B], POs > signer, FOs ><, NDH is held at waist level and DH rushes very close to it from signer, similar to ARRIVE with zz.

extremely high frequency
E-H-F.

extremely low frequency
E-L-F.

extremum
(<) MAXIMUM OR (>) MINIMUM.

eye (classifiers)
Use a rounded 5:-CL for the eyeball and an F-CL for the iris and pupil.

eye contact
(2h)[V], POs down, DH faces out directly from eyes.

eye drops
[H dot] squeezes rubber tip from above into each eye.

eyebrow pencil
[bO], draws an eyebrow on DS, then on NDS.

eyeliner
COLOR + (2h)[O^] brush several times under eyebrows while separating.

eyepiece
NDH [S], PO > DS, FO up, is held to eye and DH indexes it.

Ezekiel [Heb. Y'chezkel]
E-Z-E.

Ezra [Heb. Ezra]
E-Z-R-A.
Image credits

1. From http://ee.utah.edu/~bwb6398/baby.html (Baby's home page), which is no longer extant.

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