Emily Dickinson Lexicon

CHO'ROID, n. [Gr. χοριον, a particular membrane, and ειδος, likeness.]

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. – Coxe. Encyc.