Definition of oleum in English:

oleum

Syllabification: o·le·um
Pronunciation: /ˈōlēəm
 
/

noun

A dense, corrosive liquid consisting of concentrated sulfuric acid containing excess sulfur trioxide in solution.
More 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.

Origin

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

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Word of the day grammarian
Pronunciation: grəˈmɛːrɪən
noun
a person who studies and writes about grammar