/ Dictionary / Index T total internal reflection: Meaning and Definition of Find definitions for: to'tal inter'nal reflec'tion Pronunciation: [key] See total reflection. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. total impulse totalism Related Content Daily Word Quiz: wizened Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language