Definition of oleum in English:

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Pronunciation: /ˈōlēəm/


A dense, corrosive liquid consisting of concentrated sulfuric acid containing excess sulfur trioxide in solution.
Example sentences
  • In Tennessee all officers undergo training in which they are exposed to both CS and oleum capsicum, and no significant injuries from exposure have been reported.


Early 20th century: from Latin, literally 'oil'.

For editors and proofreaders

Syllabification: o·le·um

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