/ Dictionary / Index D distributary: Meaning and Definition of Find definitions for: dis•trib•u•tar•y Pronunciation: (di-strib'yoo-ter"ē), [key] — pl. -tar•ies. an outflowing branch of a stream or river, typically found in a delta (opposed to tributary). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: distributary (Thesaurus) distress signal distribute Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language