/ Dictionary / Index R radectomy: Meaning and Definition of Find definitions for: ra•dec•to•my Pronunciation: (ru-dek'tu-mē), [key] — pl. -mies. excision of part or all of the root of a tooth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radeau Radek Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language