Ochre

Rarity: Rare

A topic known well beyond its field, found in many languages.

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.

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Notion

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Science and technology

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What Wikipedia says

Ochre ( OH-kər; from Ancient Greek ὤχρα (ṓkhra) from ὠχρός (ōkhrós) 'pale') is a family of natural clay earth pigments, made up of ferric oxide and varying amounts of clay and sand, ranging in colour from yellow to deep orange or brown.

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

Image: charlo.be, CC BY 2.0, via Wikimedia Commons.