/ Dictionary / Index T tomentum: Meaning and Definition of Find definitions for: to•men•tum Pronunciation: (tu-men'tum), [key] — pl. -ta pubescence consisting of longish, soft, entangled hairs pressed close to the surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tomentum (Thesaurus) tomentose tomfool Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language