/ Dictionary / Index D DAT: Meaning and Definition of Find definitions for: DAT Pronunciation: [key] digital audiotape. dat. Pronunciation: [key] dative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dat (Thesaurus) dasyure data 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