/ 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: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language