noun, plural o·le·a [oh-lee-uh] /ˈoʊ li ə/ for 1, o·le·ums for 2.
Origin of oleum
Examples from the Web for oleum
Historical Examples of oleum
Oleum coriandri, L. From the fruit (seeds) of Coriandrum sativum.
Oleum rhodii, L. Said to be derived from the wood of a species of Rhodoriza.
Oleum croci, L. From the pistils of Crocus sativus (saffron).
Camphor oil; Oleum camphor factitium, L. Prepared by dissolving camphor in nitric acid, in the cold.
Greek-fire was the precursor of gunpowder; it was the oleum incendiarum of the Romans.The Browning Cyclopdia