from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The vascular middle layer of the eye constituting the iris, ciliary body, and choroid.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The middle of the three concentric layers that make up the eye; it is pigmented and vascular, and comprises of the choroid, the ciliary body, and the iris.

from the GNU version of the Collaborative International Dictionary of English

  • n. The posterior pigmented layer of the iris; -- sometimes applied to the whole iris together with the choroid coat.

from The Century Dictionary and Cyclopedia

  • n. The vascular tunic of the eye; the iris, ciliary body, and choroid taken collectively. Also called tunica uvea and uveal tract.
  • n. The dark choroid coat of the eye. See cut under eye.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the part of the eye that contains the iris and ciliary body and choroid


Medieval Latin ūvea, from Latin ūva, grape.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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