Word.ws English Dictionary

castorium

castorium is the alternative spelling of castoreum.

Meaning of castoreum

Noun

castoreum (countable and uncountable, plural castoreums or castorea)

  1. The bitter exudate of the castor sacs of mature beavers, used as a scent mark, and as a tincture in some perfumes.
    • One of the substances tried was castoreum.[…]If I were to judge from my own experience, I would say castoreum has very little therapeutic power, for I have not seen much benefit from its employment in those cases to which this remedy is said to be adapted.1835 November 28, Jon Pereira, “Lectures on Materia Medica, or Pharmacology, and General Therapeutics: Lecture IX: On Castoreum”, in London Medical Gazette, volume 17, page 299
    Synonyms:
    castor
  2. (archaic) A hat made from beaver fur.
    Synonyms:
    beaver, castor

Questions about castorium

What is castorium the alternative spelling of?
Castorium is the alternative spelling of castoreum.

Words near castorium in the dictionary

  1. castorimorph
  2. castorimorphs
  3. castorin
  4. castoring
  5. castorite
  6. castorium
  7. Castorland
  8. castorless
  9. castors
  10. castory
  11. Castos

Source and license

Adapted from Wiktionary: castorium (page history and authors); castoreum (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “castorium.” Word.ws, https://word.ws/castorium. Based on Wiktionary, CC BY-SA 4.0.