/ Dictionary / Index T tectum: Meaning and Definition of Find definitions for: tec•tum Pronunciation: (tek'tum), [key] — pl. -tums, -ta a rooflike structure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tectrix Tecumseh Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language