choroid

Etymology

From New Latin choroides, from Ancient Greek χοροειδής (khoroeidḗs, alteration of χοριοειδής (khorioeidḗs, “like the afterbirth”)), from χόριον (khórion, “membrane that encloses the fetus in the womb, afterbirth”) + -ειδής (-eidḗs, “-like”).

adj

1. (anatomy) Resembling the chorion, particularly in containing many blood vessels.
   choroid plexus

noun

1. (anatomy) The pigmented vascular layer of the eyeball between the retina and the sclera.