Nictitating membrane

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision.

Excerpt from the Wikipedia article “Nictitating membrane”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Olaf Oliviero Riemer, CC BY-SA 3.0, via Wikimedia Commons.