/ Dictionary / Index T -tomy: Meaning and Definition of Find definitions for: -tomy Pronunciation: [key] a combining form meaning “cutting, incision” of an organ, “excision” of an object, as specified by the initial element (); also occurring in abstract nouns corresponding to adjectives ending in(). Cf. appendectomy; lithotomy Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tom-tom ton Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language