eccentric.adjective
departing from a recognized, conventional, or established norm or pattern; deviating from a circular form or path, as in an elliptical orbit; not situated at or in the geometric center
eccentric.noun
one that deviates markedly from an established norm, especially a person of odd or unconventional behavior
eccentrically.adverb
synonym-erratic

eccentricity.noun,.plural.eccentricities
the quality of being eccentric; deviation from the normal, expected, or established; an example or instance of eccentric behavior
Physics-–-the distance between the center of an eccentric and its axis
Mathematics-–-the ratio of the distance of any point on a conic (shaped like a cone) section from a focus to its distance from the corresponding directrix; this ratio is constant for any particular conic section

echinoderm.noun
any of numerous radially-symmetrical.marine invertebrates of the phylum.Echinodermata, which includes the starfishes, sea urchins, and sea cucumbers, having an internal calcareous (calcium) skeleton and often covered with spines
echinodermal or echinodermatous.adjective

ecology.noun
the branch of biology that deals with relations between living organisms and their environment

economy.noun;.plural-economies
an orderly, functional arrangement of parts; an organized system; careful, thrifty management of resources, such as money, materials, or labor (learned to practice economy in making out the household budget); the system or range of economic activity in a country, region, or community
economy.adjective
economical or inexpensive to buy or use (an economy car; an economy motel)

ecotone.noun
a transitional zone between two communities containing the characteristic species of each

ectoplasm.noun
concerned with cell movement

edema.noun
an abnormal infiltration and excess accumulation of serous fluid in connective tissue or in a serous cavity, called also dropsy; watery swelling of plant organs or parts; any of various plant diseases characterized by such swellings 
edematous.adjective

edify.transitive verb
inflected form(s).edified, edifying
to instruct or improve spiritually; to erect a house, temple; build; establish; to instruct and improve especially in moral and religious knowledge, uplift, enlighten, inform

educe.transitive verb
inflected form(s)-educed; educing
to bring out (as something latent - to draw from within as if connected to a source of sound reasoning); deduce
educible.adjective
eduction.noun
synonyms-evoke, elicit, extract, extort
educe implies the bringing out of something potential or latent (educed order out of chaos)
evoke implies a strong stimulus that arouses an emotion or an interest or recalls an image or memory 
(a song that evokes warm memories) 
elicit usually implies some effort or skill in drawing forth a response (careful questioning elicited the truth) 
extract implies the use of force or pressure in obtaining answers or information (extracted a confession from him) 
extort mean to draw out something hidden, latent, or reserved suggests a wringing or 
wresting from one who resists strongly (extorted their cooperation by threatening to inform)

efficacious.adjective
having the power to produce a desired effect; effective
efficaciousness.noun
efficaciously.adverb

efficacy.noun 
inflected form(s).plural-efficacies
the power to produce an effect

effrontery.noun
shameless; unashamed boldness; gall; impudence; presumption
always derogatory in usage, effrontery connotes shamelessness or insolence in defying the rules of propriety, courtesy, etc.

e.g..abbreviation
for example

efficient.adjective
acting directly to produce an effect (an efficient cause); effective; acting or producing effectively with a minimum of waste, expense, or unnecessary effort; exhibiting a high ratio of output to input
efficiently.adverb
efficiency.noun,-plural.efficiencies
the quality or property of being efficient; the degree to which this quality is exercised (the program was implemented with great efficiency and speed)

echo-noun,-plural.echoes
the repeating of sound produced by reflection of sound waves from a surface
echo, echoed, echoing, echoes.verbs
transitive verb use.to repeat (a sound) by the reflection of sound waves from a surface; to repeat or imitate
intransitive verb use.to be repeated by or as if by an echo (the story echoed out of my mind when she mentioned that; the speaker's words echoed in her mind); to resound with or as if with an echo; reverberate.(rooms echoing with laughter
echoer-noun
echoey.adjective

echolocation.noun
a sensory system in certain animals, such as bats and dolphins, in which usually high pitched sounds are emitted and their echoes interpreted to determine the direction and distance of objects
Electronics.–.a process for determining the location of objects by emitting sound waves and analyzing the waves reflected back to the sender by the object; also called echo ranging
echolocate.verb

Eminent Domain.noun
the unrestrained ownership of land; independent of all action from without and paramount over all action within

The United States federal government possesses the right of Eminent Domain as a sovereign state, made possible by the individual states granting land to form the District of Columbia. It exercises that right in the acquisition of land.

The individual states through their own constitutions, also possess the right of eminent domain as sovereignties, within their borders and within the limits on their powers as defined by delegates from the 12 states who drafted the document and subsequently presented this U.S. Constitution to the individual states for ratification. Point is: the people of the individual States had opportunity and were able to be involved in that which was to affect them, and knew and agreed on the limited powers they agreed to be granted to a federal government of their creation. Such a thing has not happened in Canada to the detriment of regions outside of Ontaruio and Quebec.
Business and Economics.–.the right of a government to take private property for a public purpose, usually with just compensation to the owner

envoy.noun
a representative of a government who is sent on a special diplomatic mission; a minister plenipotentiary assigned to a foreign embassy, ranking next below the ambassador

enact, enacted, enacting, enacts.transitive verbs
to make into law (Congress enacted a tax reform bill); to act something out, as on a stage (enacted the part of the parent)
enactable.adjective
enactor.noun
enactment.noun
the act of enacting; the state of being enacted; something that has been enacted

envision, envisioned, envisioning, envisions.transitive verbs
to picture in the mind; imagine

ecstasy.noun,.plural.ecstasies
intense joy or delight; an intense state of happiness

ecstatic.adjective
marked by or expressing ecstasy; being in a state of ecstasy; enraptured
ecstatically.adverb