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

Uveitis is a rare inflammatory disease of the choroid of the eye, which lies between the retina and the sclera.

From Science Daily ● Apr. 25, 2024

CSF is produced by a tissue called choroid plexus in fluid-filled compartments in the CNS called ventricles.

From Textbooks ● Jun. 9, 2022

The choroid coat will be recognized as the black layer lying subjacent to the sclerotic.

From Special Report on Diseases of Cattle by United States. Bureau of Animal Industry

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