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choroid coat

noun, Ophthalmology
a pigmented, highly vascular membrane of the eye that is continuous with the iris and lies between the sclera and the retina, functioning to nourish the retina and absorb scattered light.
Also called choroid, choroid membrane.
Origin of choroid coat
1735-45 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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