/ Dictionary / Index O orchiectomy: Meaning and Definition of Find definitions for: or•chi•ec•to•my Pronunciation: (ôr"kē-ek'tu-mē), [key] — pl. -mies. excision of one or both testes; castration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orchiectomy (Thesaurus) orchid tree orchil Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language