Meaning Of The Word Nictitating membrane

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Nictitating membrane Meaning

Nictitating membrane Definition
Nictitating membrane Definition

What's The Definition Of Nictitating membrane?

nictitating membrane in American English
a transparent third eyelid hinged at the inner side or lower lid of the eye of various animals, serving to keep the eye clean and moist: it is vestigial in humans
noun: a thin membrane, or inner or third eyelid, present in many animals, capable of being drawn across the eyeball, as for protection

nictitating membrane in British English
noun: (in reptiles, birds, and some mammals) a thin fold of skin beneath the eyelid that can be drawn across the eye

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