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[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
1635-45; aqu(a) + -eous
Related forms
aqueously, adverb
aqueousness, noun
nonaqueous, adjective
superaqueous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for aqueous
  • Indeed, it is able to displace water and thus adhere to surfaces in aqueous solutions.
  • It seemed to mark the dawning of some new aqueous age.
  • The team then shined a flashlight-size near-infrared laser on aqueous solutions of both tumor and normal cells.
  • Crews extinguished the fire with aqueous film forming foam.
  • It is so aqueous that except when frozen, overland travel is extremely difficult.
  • Population crashes are difficult to avoid in aqueous cultures.
  • So perhaps the idea is to keep your photos safe after an aqueous disaster caused by brain parasites.
  • The goal of standard glaucoma surgery is to reduce pressure in the eye by increasing the outflow of the aqueous fluid.
  • To bring it down to the molecular level: your body is an aqueous environment.
  • Put diatoms into aqueous solution inside vacuum tight chamber.
British Dictionary definitions for aqueous


/ˈeɪkwɪəs; ˈækwɪ-/
of, like, or containing water
dissolved in water: aqueous ammonia
(of rocks, deposits, etc) formed from material laid down in water
Word Origin
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
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Word Origin and History for aqueous

1640s, from Latin aqua "water" (see aqua-) on analogy of French aqueux "watery" (16c., which, however, is from Late Latin aquosus "abounding in water"). Or by analogy of Latin terreus "earthy," from terra "earth." Aqueous humor is the original use in English.

Online Etymology Dictionary, © 2010 Douglas Harper
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aqueous in Medicine

aqueous a·que·ous (ā'kwē-əs, āk'wē-)
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.
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aqueous in Science
  1. Chemistry Relating to or dissolved in water.

  2. Geology Formed from matter deposited by water. Certain sedimentary rocks, such as limestone, are aqueous.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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