Word
petroleum
Phoneticspe·tro·le·um, stress on the second syllable
US/pəˈtɹoʊɫiəm/
UK/pətɹˈəʊliːəm/
Uncountable noun
Definition
n. a thick, dark oil found under the ground that is used to make petrol and other fuels.
n. a naturally occurring liquid mixture of hydrocarbons that is refined into various fuels and chemical products. Uncountable in its general sense, though countable when referring to specific types or grades.
Examples
“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.”
Examples
simple
“The price of petroleum affects the cost of many goods.”
contextual
“Engineers used advanced drilling techniques to extract petroleum from the seabed.”
complex
“The global economy remains heavily dependent on petroleum, despite the increasing pressure to transition toward renewable energy sources to mitigate climate change.”
Teaching tip
In everyday conversation, people usually just say 'oil' or 'crude oil'. 'Petroleum' is more common in scientific, industrial, or formal contexts.
Real-World Examples
“In addition to being a major petroleum producer, TotalEnergies operates gas stations to sell its products to the public.” “India is looking to increase the volume of liquefied petroleum gas it buys from the U.S.” Etymology
From Medieval Latin petroleum, from petra (“rock”) + oleum (“oil”). Doublet of petrol.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Synonyms
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Frequent
- Level
- B2 · Upper Intermediate
- Updated
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englishreference.com/q/petroleum