Ommatidium

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

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What Wikipedia says

The compound eyes of arthropods like insects, crustaceans and millipedes are composed of units called ommatidia (sing.: ommatidium). An ommatidium contains a cluster of photoreceptor cells surrounded by support cells and pigment cells. The outer part of the ommatidium is overlaid with a transparent cornea.

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

Image: Uwe Kils, aka Kils at en.wikipedia, CC BY-SA 3.0, via Wikimedia Commons.