/ Dictionary / Index S SDR: Meaning and Definition of Find definitions for: SDR Pronunciation: [key] special drawing rights. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. S. Doc. SDS Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language