/ Dictionary / Index A aphesis: Meaning and Definition of Find definitions for: aph•e•sis Pronunciation: (af'u-sis), [key] — n. Historical Ling. the disappearance or loss of an unstressed initial vowel or syllable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aphesis (Thesaurus) apheresis aphetic Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language