vitreous humor


: the clear colorless transparent jelly that fills the eyeball posterior to the lens see eye illustration

Example Sentences

Recent Examples on the Web Floaters are bits of protein in the jelly-like fluid in the back of the eye, called the vitreous humor, which cast a shadow on the retina. Dr. Keith Roach, oregonlive, 7 Feb. 2023 Jorgensen said the eye is filled with a gel-like substance that exchanges in the body more slowly than blood or urine, so drugs taken much earlier that may have already passed through other parts of the body could show up in the vitreous humor. Kimberly Fornek,, 25 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vitreous 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

14th century, in the meaning defined above

Time Traveler
The first known use of vitreous humor was in the 14th century

Dictionary Entries Near vitreous humor

Cite this Entry

“Vitreous humor.” Dictionary, Merriam-Webster, Accessed 20 Mar. 2023.

Kids Definition

vitreous humor

vit·​re·​ous humor
: the clear colorless transparent jelly that fills the eyeball behind the lens

Medical Definition

vitreous humor

Last Updated: - Updated example sentences
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