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.

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]

petroleum

/pe·tro·le·um/ (pĕ-tro´le-um) a thick natural mixture of gaseous, liquid, and solid hydrocarbons obtained from beneath the surface of the earth.
petroleum benzin  a colorless, volatile, flammable fraction from petroleum distillation, containing largely hydrocarbons of the methane series; it has been variously described as a special grade of ligroin or as a separate but similar fraction with a lower boiling range. It is used chiefly as an extractive solvent.

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]

petroleum

a thick natural oil obtained from beneath the earth. It consists of a mixture of various hydrocarbons of the paraffin and olefin series. See crude petroleum oil.

petroleum jelly
petrolatum.
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