A viscous liquid, consisting chiefly of a mixture of hydrocarbons and varying in colour from black or dark brown to light yellow, that is formed by…

Rock. Only in oil of petre n. also petre oil petroleum.

= petroleum, n. In early use also †oil (of) petrol. Cf. sense 3. Obsolete.

oil of saltpetre: petroleum. spirits of saltpetre: nitric acid. Obsolete.

petroleum, natural mineral oil.

Crude mineral oil that is pale in colour; (also) a colourless petroleum distillate, spec. a highly refined heavy distillate used medicinally and in…

Petroleum; (also) a distillation product of petroleum, esp. one used as a lubricant, moisturizer, or laxative.

(originally) oil or naphtha obtained from coal; (in later use) (North American) oil refined from petroleum, shale, etc.; kerosene; petroleum…

petroleum; an oil obtained by refining petroleum; spec. a petroleum fraction consisting of a mixture of the heavier hydrocarbons and having a high…

crude oil, natural mineral oil. So crude petroleum.

a petroleum fraction consisting of a mixture of the lighter hydrocarbons and having a low flashpoint; petrol.

the solid, non-volatile carbon residue left after the distillation and cracking of petroleum.

Crude oil (see crude, adj. 1b).

petroleum; mineral oil.

a grade of (usually light) crude oil, the price of which is fixed by agreement between oil producers and used as a guideline for the setting of…

a grade of (usually light) crude oil, the price of which is fixed by agreement between oil producers and used as a guideline for the setting of…