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cho·roid

(kôroid′) or cho·ri·oid (kôrē-oid′)

The dark-brown vascular coat of the eye between the sclera and the retina. Also called choroid coat, choroid membrane.

adj.

1. Resembling the chorion; membranous.

2. Of or relating to the choroid.

[From Greek khoroeidēs, like an afterbirth, alteration of khorioeidēs : khorion, afterbirth; see CHORION + -oeidēs, -oid.]

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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