[ey-kwee-uhs, ak-wee-]
of, like, or containing water; watery: an aqueous solution.
(of rocks or sediments) formed of matter deposited in or by water.

1635–45; aqu(a) + -eous

aqueously, adverb
aqueousness, noun
nonaqueous, adjective
superaqueous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
aqueous (ˈeɪkwɪəs, ˈækwɪ-)
1.  of, like, or containing water
2.  dissolved in water: aqueous ammonia
3.  (of rocks, deposits, etc) formed from material laid down in water
[C17: from Medieval Latin aqueus, from Latin aqua water]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1640s, from L. aqua "water," on analogy of Fr. aqueux "watery" (which, however, is from L.L. aquosus "abounding in water"). Aqueous humor attested from 1640s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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American Heritage
Science Dictionary
aqueous   (ā'kwē-əs)  Pronunciation Key 
  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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