Adjacent Words

Choroid definitions

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Webster's 1828 Dictionary

CHOROID, n. In anatomy, a term applied to several parts of the body that resemble the chorion; as the inner membrane investing the brain, or the pia mater; the second coat of the eye; the fold of the carotid artery in the brain, in which is the pineal gland.

WordNet (r) 3.0 (2005)

n
1: a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye [syn: choroid, choroid coat]

Merriam Webster's

also chorioid noun Etymology: New Latin choroides resembling the chorion, from Greek chorioeid?s, from chorion chorion Date: 1683 a vascular membrane containing large branched pigmented cells that lies between the retina and the sclera of the vertebrate eye — called also choroid coat — see eye illustration • choroid or choroidal adjective

Oxford Reference Dictionary

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

Webster's 1913 Dictionary

Choroid Cho"roid, a. [gr. ?; ? chorion + ? form.] (Anat.) resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball. -- n. The choroid coat of the eye. See Eye. Choroid plexus (Anat.), one of the delicate fringelike processes, consisting almost entirely of blood vessels, which project into the ventricles of the brain.