choroid(n = noun.body) choroid coat - a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye; Array
is a kind of membrane, tissue layer
is a part of eye, oculus, optic
resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball. [1913 Webster]
choroid, adj. & n.
--adj. like a chorion in shape or vascularity.
--n. (in full choroid coat or membrane) a layer of the eyeball between the retina and the sclera.
Etymology:
Gk khoroeides for khorioeides: see CHORION