/ Dictionary / Index S subacid: Meaning and Definition of Find definitions for: sub•ac•id Pronunciation: (sub-as'id), [key] — adj. slightly or moderately acid or sour: a subacid fruit. (of a person or a person's speech, temper, etc.) somewhat biting or sharp. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subacid (Thesaurus) subacetate subacute Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language