/ Dictionary / Index T tomo-: Meaning and Definition of Find definitions for: tomo- Pronunciation: [key] a combining form meaning “a cut, section,” used in the formation of compound words: tomography. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tommyto Tom o'Bedlam Related Content Daily Word Quiz: longevity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language