Lexic.us

Definition of Choroid

1. Noun. A highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye.

Definition of Choroid

1. a. resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball.

Definition of Choroid

1. a membrane of the eye [n -S]

Medical Definition of Choroid

1. Middle layer of the vertebrate eye, between retina and sclera. Well vascularised and also pigmented to throw light back onto the retina (the tapetum is an irridescent layer in the choroid of some eyes). Not to be confused with the choroid plexus, a highly vascularised region of the roof of the ventricles of the vertebrate brain that secretes cerebrospinal fluid. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Choroid

Other Resources: