Breadcrumb Home > Dictionary > Index U USDA: Meaning and Definition of Find definitions for: USDA Pronunciation: [key] United States Department of Agriculture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: usda (Thesaurus) U.S.C. Supp. use ✖ Related Content Daily Word Quiz: hegira Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language