oleum

[ oh-lee-uh m ]

/ ˈoʊ li əm /

noun, plural o·le·a [oh-lee-uh] /ˈoʊ li ə/ for 1, o·le·ums for 2.

Pharmacology. oil.

Nearby words

oleoresin, oleoresinous, olericulture, olestra, olethreutid, oleum, oleyl alcohol, olfaction, olfactometer, olfactometry, olfactory

Origin of oleum

1900–05; < Latin: oil

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for oleum

Oleum sarz, L. From the root bark, distilled along with salt-and-water.
Cooley's Practical Receipts, Volume II|Arnold Cooley
Greek-fire was the precursor of gunpowder; it was the oleum incendiarum of the Romans.
The Browning Cyclopdia|Edward Berdoe
Oleum cer, L. From beeswax and sand distilled together; the product is rectified once or oftener.
Cooley's Practical Receipts, Volume II|Arnold Cooley
Oleum et operam perdidi—I have lost both the oil and my pains.
Dictionary of Quotations from Ancient and Modern, English and Foreign Sources|James Wood

Oleum lupuli, L. From commercial hops, by distillation along with water.
Cooley's Practical Receipts, Volume II|Arnold Cooley

British Dictionary definitions for oleum

oleum

/ (ˈəʊlɪəm) /

noun plural olea (ˈəʊlɪə) or oleums

another name for fuming sulphuric acid

Word Origin for oleum

from Latin: oil, referring to its oily consistency

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012