aqueous humor

noun

: a transparent fluid occupying the space between the crystalline lens and the cornea of the eye

Example Sentences

Recent Examples on the Web The fluid inside the eye (in the part of the eye called the aqueous humor) drains through structures in the eye called the trabecular meshwork. Dr. Keith Roach, oregonlive, 4 Oct. 2022 In some people, the flow of fluid in the aqueous humor is limited, and can even be completely obstructed by the root of the iris (the colored part of the eye), causing very high pressures and an immediate threat to sight. Dr. Keith Roach, oregonlive, 4 Oct. 2022 Samples of blood, urine, and aqueous humor (the liquid that nourishes the cornea) were screened for the presence of hundreds of substances, both legal medications and prohibited drugs. Tim Sullivan, The Courier-Journal, 11 Feb. 2022

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

Word History

First Known Use

1638, in the meaning defined above

Time Traveler
The first known use of aqueous humor was in 1638

Dictionary Entries Near aqueous humor

Cite this Entry

“Aqueous humor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aqueous%20humor. Accessed 27 Jan. 2023.

Kids Definition

aqueous humor

noun
: a clear fluid between the lens and the cornea of the eye

Medical Definition

aqueous humor

noun
: a transparent fluid occupying the space between the crystalline lens and the cornea of the eye

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