/ Dictionary / Index T t quark: Meaning and Definition of Find definitions for: t quark Pronunciation: [key] — Physics. Physics. See top quark. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. TPR tr. Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language