American Heritage Dictionary of the English Language, 5th Edition
From Latinoleum (“olive oil"), from Ancient Greek á¼”Î»Î±Î¹Î¿Î½ (elaion, “olive oil").
Oleum Sentence Examples
In '724 Hermann Boernaave referred to the oleum terrae of Burma, and "Barbados tar" was then well known as a medicinal agent.
The Latino-barbaric word Olibanum (quasi Oleum Libani), the common name for frankincense in modern commerce, is used in a bull of Pope Benedict IX.
The volatile oil - oleum cubebae - is also official, and is the form in which this drug is most commonly used, the dose being 5 to 20 minims, which may be suspended in mucilage or given after meals in a cachet.
The dry salt is very hygroscopic; it deliquesces into an oily solution ("oleum tartari") in ordinary air.