Word starting with e ending in on - (230 words)

Scrabble Word	Definition
eon³	(US) Eternity.

Scrabble Word	Definition
ebon⁶	(now poetic) Ebony; an ebony tree.
exon¹¹	An officer of the Queen's Body Guard of the Yeomen of the Guard.

Scrabble Word	Definition
eikon⁹	Alternative spelling of icon (“religious image”)

Scrabble Word	Definition
elevon⁹	(aviation) A movable surface at the trailing edge of a tailless airplane (such as the space shuttle) that provides pitch and roll control.
epigon⁹	epigone
etalon⁶	An optical device containing parallel mirrors, used as a narrow band filter, often in laser design.
ethion⁹	(organic chemistry) An organophosphate insecticide, [(dethoxyphosphinothioylthio)methylthio]-diethoxy-thioxophosphorane, that is known to neutralise the neural enzyme acetylcholinesterase.
etymon¹¹	(linguistics) The original or earlier form of an inherited or borrowed word, affix, or morpheme either from an earlier period in a language's development, from an ancestral language, or from a foreign language.

Scrabble Word	Definition
ecdyson¹³	Alternative form of ecdysone
echelon¹²	A level or rank in an organization, profession, or society.
edition⁸	(publishing) A written work edited and published, as by a certain editor or in a certain manner.
eftsoon¹⁰	Obsolete form of eftsoons.
eidolon⁸	An image or representation of an idea; a representation of an ideal form; an apparition of some actual or imaginary entity, or of some aspect of reality.

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Scrabble Word	Definition
eclosion¹⁰	(biology) The emergence of an insect from the pupa case, or of a larva from the egg.
ectozoon¹⁹	(zoology) An epizoon.
eduction¹¹	The act of educing, of deducing: deduction.
effusion¹⁴	A liquid outpouring.
egestion⁹	The act or result of egesting

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Scrabble Word	Definition
education¹²	(uncountable) The process of imparting knowledge, skill and judgment.
effluxion²²	The process of flowing out.
egression¹⁰	The act of going; egress.
elevation¹²	The act of raising from a lower place, condition, or quality to a higher; said of material things, persons, the mind, the voice, etc.
elocution¹¹	The art of public speaking with expert control of gesture and voice, etc.

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Scrabble Word	Definition
ebullition¹²	The act of boiling.
elongation¹¹	The act of lengthening
eluviation¹³	(soil science, countable) The sideways or downward movement of dissolved or suspended material within soil caused by rainfall
emaciation¹⁴	The act of making very lean.
emendation¹³	The act of altering for the better, or correcting what is erroneous or faulty; correction; improvement.

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Scrabble Word	Definition
edification¹⁷	The act of edifying, or the state of being edified or improved; a building process, especially morally, emotionally, or spiritually
ejaculation²⁰	The act of throwing or darting out with a sudden force and rapid flight.
elaboration¹³	The act or process of producing or refining with labor; improvement by successive operations; refinement.
elicitation¹³	The act of eliciting.
elimination¹³	The act of eliminating, expelling or throwing off.

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Scrabble Word	Definition
echolocation¹⁹	The use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar.
effectuation²⁰	An act of effectuating.
elucubration¹⁶	The act of elucubrating.
emancipation¹⁸	The act of setting free from the power of another, as from slavery, subjection, dependence, or controlling influence.
emargination¹⁵	A notch (or series of notches) in a margin

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Scrabble Word	Definition
electrocution¹⁷	The accidental death or suicide by electric shock.
encapsulation¹⁷	The act of enclosing in a capsule; the growth of a membrane around (any part) so as to enclose it in a capsule.
enculturation¹⁵	The process by which an individual adopts the behaviour patterns of the culture in which they are immersed.
epiphenomenon²²	(medicine) A symptom that develops during the course of a disease that is not connected to the disease.
equilibration²⁴	The formation, or maintenance, of an equilibrium

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Scrabble Word	Definition
emulsification²¹	The process by which an emulsion is formed.
envenomization²⁸	poisoning by the venom of a living creature
epithelization²⁸	Alternative form of epithelialization
esterification¹⁹	(organic chemistry) Any reaction (typically between an acid and an alcohol) that results in the production of an ester
eutrophication²¹	(biology) The process of becoming eutrophic; the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

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Scrabble Word	Definition
electrification²²	The act of electrifying, or the state of being charged with electricity.
etherealization²⁷	The act or process of etherealizing.
excommunication³⁰	The act of excommunicating, disfellowshipping or ejecting; especially an ecclesiastical censure whereby the person against whom it is pronounced is, for the time, cast out of the communication of the church; exclusion from fellowship in things spiritual.
exemplification³¹	The act of exemplifying; a showing or illustrating by example.
experimentation²⁶	The act of experimenting; practice by experiment.

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We found 230 words starting with e and ending in on

Definitions from Wikitionary and Text available under Creative Commons License