/ Dictionary / Index E ethene: Meaning and Definition of Find definitions for: eth•ene Pronunciation: (eth'ēn), [key] — n. Chem. ethylene (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ethene (Thesaurus) Ethelstan ethephon Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language