aqueous

adjective

aque·​ous ˈā-kwē-əs  ˈa- 

1

a

: 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

Developed in the 1940s, they were used to make products anti-stick, stain resistant, water and grease repellant, and to make aqueous film-forming firefighting foam. —Anne Hulick and Bill Lucey, Hartford Courant, 28 Apr. 2024

As recently as last year, the Pentagon defended PFAS-laden firefighting foam -- known as aqueous film forming foam -- as critical to the nation's defenses. —Devin Dwyer, ABC News, 2 May 2024

This system can move aqueous solutions along microchannels, even against gravity. —IEEE Spectrum, 24 Apr. 2024

In a paper published in February in the journal Small, authors Zhao Wang and Jian Zhu say the key to such batteries is a stretchable zinc-ion chemistry that uses an aqueous electrolyte. —IEEE Spectrum, 5 Apr. 2024

Word History

Etymology

Medieval Latin aqueus, from Latin aqua

First Known Use

1646, in the meaning defined at sense 1a

Phrases Containing aqueous

• aqueous humor

Kids Definition

aqueous

adjective

aque·​ous ˈā-kwē-əs  ˈak-wē- 

1

a

: of, relating to, or resembling water

b

: made from, by, or with water

an aqueous solution

2

: of or relating to the aqueous humor

Medical Definition

aqueous

1 of 2 adjective

aque·​ous ˈā-kwē-əs  ˈak-wē- 

1

a

: 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

aqueous

2 of 2 noun

: aqueous humor