[ ey-kwee-uh s, ak-wee- ]
/ ˈeɪ kwi əs, ˈæk wi- /


of, like, or containing water; watery: an aqueous solution.
(of rocks or sediments) formed of matter deposited in or by water.

Origin of aqueous

First recorded in 1635–45; aqu(a) + -eous

Related forms

a·que·ous·ly, adverba·que·ous·ness, nounnon·a·que·ous, adjectivesu·per·a·que·ous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for aqueously


/ (ˈeɪkwɪəs, ˈækwɪ-) /


of, like, or containing water
dissolved in wateraqueous ammonia
(of rocks, deposits, etc) formed from material laid down in water

Word Origin for aqueous

C17: from Medieval Latin aqueus, from Latin aqua water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for aqueously


[ ākwē-əs, ăkwē- ]


Relating to, similar to, containing, or dissolved in water; watery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for aqueously


[ ākwē-əs ]

Chemistry Relating to or dissolved in water.
Geology Formed from matter deposited by water. Certain sedimentary rocks, such as limestone, are aqueous.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.