variants
or less commonly chorioid
: a vascular membrane containing large branched pigmented cells that lies between the retina and the sclera of the vertebrate eye
called also choroid coat
see eye illustrationExamples of choroid in a Sentence
Recent Examples on the Web
It is primarily produced by a network of cells called the choroid plexus, which is located in the brain’s ventricles or cavities.
—
Danielle Wilhour, Discover Magazine, 15 Aug. 2024
It is primarily produced by a network of cells called the choroid plexus, which is located in the brain’s ventricles, or cavities.
—Danielle Wilhour, The Conversation, 14 Aug. 2024
The injury caused a rupture to his left choroid, which is the part of the eye located between the sclera, or whites of the eye, and the retina, the layer of cells lining the internal wall at the back of the eye, according to the American Academy of Ophthalmology.
—Nikki Dobrin, Peoplemag, 1 Sep. 2023
In the choroid plexus, a tissue in the large cavities of the brain that produces cerebrospinal fluid (CSF), the walls of blood vessels are much leakier.
—Yasemin Saplakoglu, Quanta Magazine, 20 June 2023
Alpha-klotho is highly abundant in a central structure of the brain called the choroid plexus.
—William A. Haseltine, Forbes, 20 Feb. 2023
The team also discovered that one of the astronauts developed folds in the choroid, the layer of blood vessels and tissue between the retina and the sclera.
—Jennifer Leman, Popular Mechanics, 3 Mar. 2022
The condition, known technically as birdshot chorioretinopathy, causes severe, progressive inflammation of the retina and the choroid, the vascular layer of the eye.
—Caren Chesler, Popular Mechanics, 6 Mar. 2019
Nightstar, a gene therapy company based in the U.K., has been undergoing clinical trials to address choroideremia, a mutation in the CHM gene that leads to degeneration of the choroid (Misrok’s vision is affected by choroid damage).
—Caren Chesler, Popular Mechanics, 6 Mar. 2019
Danielle Wilhour, Discover Magazine, 15 Aug. 2024
It is primarily produced by a network of cells called the choroid plexus, which is located in the brain’s ventricles, or cavities.
—Danielle Wilhour, The Conversation, 14 Aug. 2024
The injury caused a rupture to his left choroid, which is the part of the eye located between the sclera, or whites of the eye, and the retina, the layer of cells lining the internal wall at the back of the eye, according to the American Academy of Ophthalmology.
—Nikki Dobrin, Peoplemag, 1 Sep. 2023
In the choroid plexus, a tissue in the large cavities of the brain that produces cerebrospinal fluid (CSF), the walls of blood vessels are much leakier.
—Yasemin Saplakoglu, Quanta Magazine, 20 June 2023
Alpha-klotho is highly abundant in a central structure of the brain called the choroid plexus.
—William A. Haseltine, Forbes, 20 Feb. 2023
The team also discovered that one of the astronauts developed folds in the choroid, the layer of blood vessels and tissue between the retina and the sclera.
—Jennifer Leman, Popular Mechanics, 3 Mar. 2022
The condition, known technically as birdshot chorioretinopathy, causes severe, progressive inflammation of the retina and the choroid, the vascular layer of the eye.
—Caren Chesler, Popular Mechanics, 6 Mar. 2019
Nightstar, a gene therapy company based in the U.K., has been undergoing clinical trials to address choroideremia, a mutation in the CHM gene that leads to degeneration of the choroid (Misrok’s vision is affected by choroid damage).
—Caren Chesler, Popular Mechanics, 6 Mar. 2019
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'choroid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Choroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/choroid. Accessed 17 Sep. 2024.
Copy CitationKids Definition
Medical Definition
choroid
noun
cho·roid
ˈkō(ə)r-ˌȯid, ˈkȯ(ə)r- 
variants
also chorioid
: a vascular membrane containing large branched pigment cells that lies between the retina and the sclera of the eye
called also choroid coat
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