Legal Definition
Petroleum is a naturally occurring, liquid hydrocarbon composed primarily of carbon and hydrogen, which is extracted from geological formations. In a legal context, it refers to the resource or commodity itself, often regulated under energy law or contract law concerning its extraction, pricing, and transport.
Plain-English Translation
Imagine petroleum as a liquid that comes from the earth, like crude oil. It's a natural substance made of carbon and hydrogen. In law, it means the stuff that is being sold or used for energy, like in an oil field.