/ Dictionary / Index A acinous: Meaning and Definition of Find definitions for: ac•i•nous Pronunciation: (as'u-nus), [key] — adj. consisting of acini. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acinous (Thesaurus) aciniform acinus Related Content Daily Word Quiz: loquacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language