aque·​ous | \ ˈā-kwē-əs How to pronounce aqueous (audio) , ˈa- How to pronounce aqueous (audio) \

Definition of aqueous

1a : of, relating to, or resembling water
b : made from, with, or by water an aqueous solution
2 medical : of or relating to the aqueous humor

Examples of aqueous in a Sentence

Recent Examples on the Web The bacteria are inserted into a tower in an aqueous solution. Erik Kobayashi-solomon, Forbes, 30 Sep. 2021 On a recent visit, the sun filtered in aqueous light through the canopy and threw gold shafts between massive trunks. Tribune News Service, oregonlive, 18 July 2021 The rich blues and aqueous textures of the many watery scenes suggest an islander’s seaward outlook, while the fiery, liquid reds in other pictures evoke volcanoes. Washington Post, 28 May 2021 Most of the smaller pictures are punctuated with metallic-gold blots, which effectively contrast the aqueous pigment. Washington Post, 23 Apr. 2021 Molecular Assemblies' enzymatic synthesis method uses aqueous (non-toxic) reagents, requires minimal post-synthesis purification and processing, and can scale to longer, higher quality, sequence-specific DNA. John Cumbers, Forbes, 15 Apr. 2021 Hydrologists know that the Amazon River, by far the largest aqueous artery on the planet, feeds one-fifth of all the freshwater that flows into the oceans, more than the next eight largest rivers in the world combined. Daniel Glick, Scientific American, 3 Apr. 2017 Later in the mission Cassini found tentative evidence for an aqueous ocean beneath Titan’s water-ice crust, too. Lee Billings, Scientific American, 14 Sep. 2017 McDonnell convincingly shows that the center of power in early North America was not, in fact, New York or anywhere in the east but rather the aqueous crossroads of Sault Ste. David Treuer, The New York Review of Books, 17 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aqueous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of aqueous

1646, in the meaning defined at sense 1a

History and Etymology for aqueous

Medieval Latin aqueus, from Latin aqua

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Time Traveler for aqueous

Time Traveler

The first known use of aqueous was in 1646

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Dictionary Entries Near aqueous



aqueous ammonia

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Statistics for aqueous

Last Updated

9 Oct 2021

Cite this Entry

“Aqueous.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2021.

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More Definitions for aqueous



English Language Learners Definition of aqueous

: containing water or similar to water


aque·​ous | \ ˈā-kwē-əs How to pronounce aqueous (audio) , ˈa- \

Kids Definition of aqueous

: made of, by, or with water an aqueous solution


aque·​ous | \ ˈā-kwē-əs How to pronounce aqueous (audio) , ˈak-wē- How to pronounce aqueous (audio) \

Medical Definition of aqueous

 (Entry 1 of 2)

1a : of, relating to, or resembling water an aqueous vapor
b : made from, with, or by water an aqueous solution
2 : of or relating to the aqueous humor



Medical Definition of aqueous (Entry 2 of 2)


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