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Choroid
Pronunciation
Definition 1
A thin layer of tissue that is part of the middle layer of the wall of the eye, between the sclera (white outer layer of the eye) and the retina (the inner layer of nerve tissue at the back of the eye). The choriod is filled with blood vessels that bring oxygen and nutrients to the eye. (NCI Dictionary)
Definition 2
A blood vessel-containing membrane of the eye that lies between the retina and the sclera. (NCI Thesaurus)
Definition 3
The thin, highly vascular membrane covering most of the posterior of the eye between the RETINA and SCLERA. (NLM, Medical Subject Headings)
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