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castoreum

American  
[ka-stawr-ee-uhm, -stohr-] / kæˈstɔr i əm, -ˈstoʊr- /

noun

  1. castor.


Etymology

Origin of castoreum

< Latin < Greek kastórion, equivalent to kastor- (stem of kástōr ) beaver + -ion, neuter of -ios adj. suffix

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Beavers were hunted to extinction in Britain 400 years ago for their meat, furry water-resistant pelts and a substance they secrete called castoreum - used in food, medicine and perfume.

From BBC ● Jun. 27, 2025

If castoreum were ever to appear in something you ate, Francl says not to worry.

From National Geographic ● Nov. 15, 2023

Indeed, when Campbell Palmer smells castoreum in her research in Great Britain, she knows right away “there’s probably two families here, and they’re telling each other, ‘This is the line.

From National Geographic ● Nov. 15, 2023

According to the 2022 book, castoreum can contain more than 75 different chemical compounds—an unusually high diversity.

From National Geographic ● Nov. 15, 2023

He referred to castoreum, a liquid obtained from the beaver, or castor, itself and having a powerful odor which acts on the animal just as catnip acts on a cat.

From Four Boy Hunters by Ralph Bonehill

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