choroid

American  

[kawr-oid, kohr-] / ˈkɔr ɔɪd, ˈkoʊr- /

Also choroidal,

adjective

1. like the chorion; membranous.

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noun

1. choroid coat.

choroid British  

/ ˈkɔːrɔɪd, ˈkɔːrɪˌɔɪd /

adjective

1. resembling the chorion, esp in being vascular

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noun

1. the brownish vascular membrane of the eyeball between the sclera and the retina

choroid Scientific  

/ kôr′oid′ /

1. The dark-brown vascular coat of the eye between the sclera and the retina.

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1. Resembling the chorion; membranous.

2. Relating to or involving the choroid of the eye.

Other Word Forms

• prechoroid
  adjective
• subchoroid
  adjective
• subchoroidal
  adjective

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Etymology

Origin of choroid

1625–35; < Greek choroeidḗs false reading for chorioeidḗs chorioid

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Example Sentences

See Examples For:

choroid

The researchers also detected previously unrecognized chemical boundaries in the choroid plexus, the structure responsible for producing cerebrospinal fluid, as well as in the tissues lining the brain's internal cavities.

From Science Daily ● Oct. 13, 2026

"Depending on the wavelength used, the autofluorescence signal from the retina and choroid can differ significantly. Depending on the excitation wavelength, lesions can be imaged at different depths and therefore in different areas," explains Mauschitz.

From Science Daily ● Apr. 25, 2024

They focused on a small region called the choroid plexus, which is known as a major conduit of immune cells into the brain.

From Science Daily ● Jan. 3, 2024

Along with the ciliary body and iris, the choroid forms the uveal tract.

From Textbooks ● Jan. 1, 2015

The Retina.—Choroidal inflammations are generally patchy, various foci of inflammation being scattered over the choroid.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" by Various

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