/ Dictionary / Index T triboluminescence: Meaning and Definition of Find definitions for: tri•bo•lu•mi•nes•cence Pronunciation: (trī"bō-l"mu-nes'uns, trib"ō-), [key] — n. Physics. luminescence produced by friction, usually within a crystalline substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tribology tribrach Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language