Spermaceti

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.

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Notion

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Science and technology

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What Wikipedia says

Spermaceti , one of the fractions of sperm oil, is a waxy substance found in the head cavities of the sperm whale (and, in smaller quantities, in the oils of other whales). Spermaceti is created in the spermaceti organ inside the whale's head. This organ may contain as much as 1,900 litres (500 US gal) of spermaceti.

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

Image: Genevieve Anderson, CC BY-SA 3.0, via Wikimedia Commons.