/ Dictionary / Index A aquamarine: Meaning and Definition of Find definitions for: aq•ua•ma•rine Pronunciation: (ak"wu-mu-rēn', ä"kwu-), [key] — n. a transparent, light-blue or greenish-blue variety of beryl, used as a gem. light blue-green or greenish blue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aquamarine (Thesaurus) aquamanile aquanaut Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language