(military) A petroleum product (generally a lubricant, oil, grease, or specialty item) normally packaged by a manufacturer and procured, stored, transported, and issued in containers having a fill capacity of 55 United States gallons (or 45 imperial gallons, or 205 liters) or less.

plural of petroleum

plural of petrologist

plural of petroleum jelly

plural of packaged petroleum product

(rare) plural of petroleum

(geology, petrology, of a rock or geologic formation) Containing or yielding petroleum.

plural of petrolhead

Of or pertaining to petrology, the study of rock formation and composition

Of or pertaining to petrology.