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

Since its creation, PFAS-containing aqueous film-forming foam has been installed on all military aircraft, civil ships, and airplanes. —Lana Barhum, Verywell Health, 18 Oct. 2024

Your eye doctor will then determine whether dryness is linked to insufficient tears (aqueous deficient dry eye) or insufficient oil in the tears (evaporative dry eye). —Maxine Lipner, Verywell Health, 11 Sep. 2024

Geopolymer cements are usually activated in an aqueous solution that is either alkaline or acidic. —Erik Kobayashi-Solomon, Forbes, 20 Sep. 2024

The refractive index of those aqueous components is low, while the refractive index of the proteins and lipids is high. —Jacek Krywko, Ars Technica, 16 Sep. 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