/ Dictionary / Index T TDY: Meaning and Definition of Find definitions for: TDY Pronunciation: [key] temporary duty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. t.d.s. te Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language