Definition of nictitating membrane
: a thin membrane found in many vertebrates at the inner angle or beneath the lower lid of the eye and capable of extending across the eyeball
What's Trending Now
More Trending Words
First Known Use of nictitating membrane
1713
Medical Dictionary
nictitating membrane
medical Definition of nictitating membrane
: a thin membrane found in many vertebrate animals at the inner angle or beneath the lower lid of the eye and capable of extending across the eyeball — called also
membrana nictitans, third eyelid
Seen and Heard
What made you want to look up nictitating membrane? Please tell us where you read or heard it (including the quote, if possible).
