dyad
A set of two elements treated as one; a pair.
Two persons in an ongoing relationship; a dyadic relationship.
The relationship or interaction itself in reference to a couple.
Any set of two different pitch classes.
An element, atom, or radical having a valence of or combining power of two.
A chromosome structure, usually X- or V-shaped, consisting of two condensed sister chromatids joined by a centromere.
A secondary unit of organisation consisting of an aggregate of monads.
A tensor of order two and rank one.

dyads
plural of dyad

dygogram
A chart showing the horizontal variation in the magnetic force acting on a ship's compass needle by the iron within the ship, as a function of course steered

dygograms
plural of dygogram

dynactin
dynein activator complex: a multi-subunit protein found in eukaryotic cells that aids in bidirectional intracellular transport by binding to dynein and kinesin-2 and linking them to the organelle or vesicle to be transported.

dynactins
plural of dynactin

dyopoly
Synonym of duopoly.

dystopia
A miserable, dysfunctional state or society that has a very poor standard of living or severe censorship, oppression, etc.
Anatomical tissue that is not found in its usual place.

dystopiae
plural of dystopia

dystopias
plural of dystopia

dzong
Alternative form of jong (“Tibetan building”).

dzongs
plural of dzong

eam
Uncle.

eame
Obsolete form of eam (“an uncle”).

eams
plural of eam.

earlships
plural of earlship

earthmover
A vehicle designed to excavate or transport earth in large quantities.

earthmovers
plural of earthmover

earthship
Alternative form of Earthship.

earthships
plural of earthship

ebike
Alternative form of e-bike.

ebikes
plural of ebike

ecarte
A card game for two persons, with 32 cards, ranking K, Q, J, A, 10, 9, 8, 7. Five cards are dealt each player, and the 11th turned as trump. Five points constitute a game.

ecchondroses
plural of ecchondrosis

ecchondrosis
A cartilaginous outgrowth.

echelons
plural of echelon

echocardiographist
A cardiographist whose speciality is echocardiography

echocardiographists
plural of echocardiographist

ecka
Alternative form of ekka (“Indian one-horse vehicle”).

eckas
plural of ecka

ecoacoustics
The science of the relationship between sound and the environment

ecocar
A car designed to have minimal impact on the natural environment.

ecocars
plural of ecocar

ecocycle
An ecological cycle.

ecocycles
plural of ecocycle

ecodriving
Synonym of hypermiling.

ecoduct
A type of wildlife crossing in the form of a bridge or tunnel, usually covered with foliage and turf, which animals may use to cross roads without the risk of being hit by vehicles; a wildlife viaduct.

ecoducts
plural of ecoduct

ecomechanics
The mechanics of ecological interactions and relationships

econobox
A small, unassuming automobile.

econoboxes
plural of econobox

ecoservice
An activity other than research and teaching assistantships that increases the public's environmental awareness.
The benefits of nature to households, communities, and agriculture.

ecoservices
plural of ecoservice

ecotours
plural of ecotour

ectosymbiont
A partner in a symbiotic relationship that remains on the surface of its host or occupies a body cavity

ectosymbionts
plural of ectosymbiont

edh
Alternative form of eth.

edhs
plural of edh

edileship
Alternative form of aedileship.

edileships
plural of edileship

editorships
plural of editorship

eelboat
A boat used for eeling (catching eels).

eelboats
plural of eelboat

eer
Unpunctuated contraction of ever.

effervescence
The escape of gas from solution in a liquid, especially the escape of carbon dioxide from a carbonated drink.
Vivacity.
Foment.

effervescences
plural of effervescence

effervescencies
plural of effervescency

effervescency
effervescence

eggcrate
Alternative form of egg crate.
Alternative form of egg crate.
Alternative form of egg crate.
Alternative form of egg crate.
Alternative form of egg crate.
Alternative form of egg crate.
Alternative form of egg-crating (plastic mat)
A display that egg-crates multiple images.

eicosatetraene
A hydrocarbon chain with 20 carbon atoms and four double bonds (C₂₀H₃₀), equivalent to eicosatetraenoic acid without the carboxylic acid group (–COOH)

eicosatriene
A hydrocarbon chain with 20 carbon atoms and three double bonds (C₂₀H₃₀), equivalent to eicosatrienoic acid without the carboxylic acid group (–COOH).

eigenclasses
plural of eigenclass

eigencolumn
A column vector associated with eigenvalues.

eigenstrain
A residual strain produced without an external force

eigenstrains
plural of eigenstrain

eigenstress
A stress produced by an eigenstrain

eigenstresses
plural of eigenstress

eightsman
A member of a team of eight rowers who propel the same boat.

eightsmen
plural of eightsman

ekha
Alternative form of ekka (“Indian one-horse vehicle”).

ekhas
plural of ekha

eki
A Japanese train station.

ekka
A small vehicle used in India, pulled by a single horse.

ekkas
plural of ekka

ekranoplan
a ground-effect vehicle

ekranoplane
Alternative spelling of ekranoplan.

ekranoplanes
plural of ekranoplane

ekranoplans
plural of ekranoplan

elderships
plural of eldership

electorships
plural of electorship

electrodiesel
A locomotive that can be powered either from an electricity supply or by using the onboard diesel engine.

electrodiesels
plural of electrodiesel

electrogasdynamics
The transport of ions in a gas

electrogyro
A unit that works first as a motor, taking energy from an electrical supply and converting it into kinetic energy which is stored in flywheels; when a vehicle so fitted moves, the energy stored is reconverted to electricity and supplied to traction motors.

electrogyros
Plural of electrogyro.

electrohydraulics
electrohydraulic systems generally

electrokinesis
The transport of particles or fluid by means of an electric field acting on a fluid which has a net mobile charge.
The generation of electrical force using the mind alone.

electromigration
the transport of small particles under the influence of an electric charge; the separation of ions of isotopes by this method

electromigrations
plural of electromigration

electromobile
A motor car powered by an electric motor

electromobiles
plural of electromobile

electropult
An electromagnetic catapult for launching aircraft.

electropults
plural of electropult

electrotransport
The transport of material in an electric field

electrotransports
plural of electrotransport

elegance
Grace, refinement, and beauty in movement, appearance, or manners.
Restraint and grace of style.
The beauty of an idea characterized by minimalism and intuitiveness while preserving exactness and precision.
A refinement or luxury.

elegances
plural of elegance

elegancies
plural of elegancy

elegancy
Alternative form of elegance.
A mock title.

elfships
plural of elfship

eliticide
The targeted killing of the leadership of a group (to cripple it), for example at the beginning of a genocide or during a revolution.

eliticides
plural of eliticide

elitocide
Alternative form of eliticide.

ellipticals
plural of elliptical

ellwands
plural of ellwand

elpee
An LP.

elpees
plural of elpee

embargos
plural of embargo

embassadorship
Obsolete spelling of ambassadorship.

embolon
A blood clot or swelling, particularly one that blocks an artery; an embolus.
A battering ram on a warship.
A military formation, usually shaped like a wedge.
Anything wedge-shaped.

emirships
plural of emirship

empennage
The tail assembly of an aircraft.
The feathers of an arrow or the tail fins of a bomb or rocket used to stabilize the longitudinal axis of the projectile parallel to the flight path.

empennages
plural of empennage

emperess
Obsolete spelling of empress.

emperesses
plural of emperess

emperorships
plural of emperorship