/ Dictionary / Index A aqueous: Meaning and Definition of Find definitions for: a•que•ous Pronunciation: (ā'kwē-us, ak'wē-), [key] — adj. of, like, or containing water; watery: an aqueous solution. (of rocks or sediments) formed of matter deposited in or by water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aqueous (Thesaurus) aqueduct of Sylvius aqueous ammonia Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language