noun. The dark-brown vascular coat of the eye between the sclera and the retina.

adjective. Resembling the chorion; membranous.

adjective. Of or relating to the choroid.

Membranous, as a chorion; like or likened to the chorion, as an investing part or tunic: in anatomy, applied to several delicate, highly vascular membranes which invest certain parts, and to associated structures.

noun. A delicate, highly vascular membrane forming one of the coats or tunics of the eyeball, lining the sclerotic, and lying between it and the retina, with which it is in contact by its inner surface.

adjective. resembling the chorion.

adjective. one of the delicate fringelike processes, consisting almost entirely of blood vessels, which project into the ventricles of the brain.

noun. The vascular layer of the eye lying between the retina and the sclera.

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

"In vertebrates, underneath the photoreceptors is a layer of pigment and pigment cells called the choroid the squid, cuttlefish and octopus have similar arrangements - more on this later, this layer of pigment absorbs stray light that is not caught by the photoreceptors, which might reflect back and fuzz up the image."

choroid coat  choroid fissure  choroid gland  choroid muscle  choroid plexuses  

chorioid  choroid coat  choroidea  

membrane  tissue layer  

adenosquamous  blastema  brachial  broad-skirted  celiac