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nictitating membrane |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.03 sec. |
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nictitating membrane (in reptiles, birds, and some mammals) a thin fold of skin beneath the eyelid that can be drawn across the eye nictitating membrane [′nik·ə‚tād·iŋ ′mem‚brān] (vertebrate zoology) A membrane of the inner angle of the eye or below the eyelid in many vertebrates, and capable of extending over the eyeball. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In South America, a burrowing rodent, the tuco-tuco, or Ctenomys, is even more subterranean in its habits than the mole; and I was assured by a Spaniard, who had often caught them, that they were frequently blind; one which I kept alive was certainly in this condition, the cause, as appeared on dissection, having been inflammation of the nictitating membrane. |
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