petroleum
n. uncountablen. a thick, dark oil found deep underground. It is used to make fuel for cars and planes, as well as products like plastic.
n. a naturally occurring, flammable liquid found in geological formations beneath the Earth's surface. It consists of a complex mixture of hydrocarbons and is refined into various fuels and chemical products.
The price of petroleum affects the cost of many goods.
Engineers used advanced drilling techniques to extract petroleum from the seabed.
The global economy remains heavily dependent on petroleum, despite the increasing pressure to transition toward renewable energy sources to mitigate climate change.
From Medieval Latin petroleum, from petra (“rock”) + oleum (“oil”). Doublet of petrol.
Uncountable in its general sense; occasionally used as a countable noun when referring to different chemical grades or types of the oil.