petroleum
noun /pəˈtrəʊliəm/
/pəˈtrəʊliəm/
[uncountable]- mineral oil that is found under the ground or the sea and is used to produce petrol, paraffin, diesel oil, etc.
- The government suspended its supplies of petroleum to the country as a result of the crisis.
- There were still 30 million barrels of refined petroleum in storage.
Oxford Collocations DictionaryPetroleum is used before these nouns:- exploration
- geology
- reserve
- …
Word Originlate Middle English: from medieval Latin, from Latin petra ‘rock’ (from Greek) + Latin oleum ‘oil’.