/ Dictionary / Index A appendectomy: Meaning and Definition of Find definitions for: ap•pen•dec•to•my Pronunciation: (ap"un-dek'tu-mē), [key] — pl. -mies. excision of the vermiform appendix. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: appendectomy (Thesaurus) appendant appendiceal Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language