petroleum

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petroleum

 [pĕ-tro´le-um]
a thick natural oil obtained from beneath the earth. It consists of a mixture of various hydrocarbons of the paraffin and olefin series.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pe·tro·le·um

(pĕ-trō'lē-ŭm),
A mixture of liquid hydrocarbons found in the earth in various parts of the world and believed to be derived from fossilized animal and plant remains; the source of petrolatum, in addition to its use for lighting and heating purposes.
Synonym(s): coal oil, rock oil
[L. petra, rock, + oleum, oil]
Farlex Partner Medical Dictionary © Farlex 2012

pe·tro·le·um

(pĕ-trō'lē-ŭm)
A mixture of liquid hydrocarbons found in the earth in various parts of the world believed to be derived from fossilized animal and plant remains.
[L. petra, rock, + oleum, oil]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Then there was the disagreement over how much coal oil to add in total.
As I recall, we had three or four regular coal oil lamps before buying a Rayo design, which had a round wick.