/ Dictionary / Index S soy: Meaning and Definition of Find definitions for: soy Pronunciation: (soi), [key] — n. See the soybean. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: soy (Thesaurus) sox soya bean Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language