fuel oil

B2Energy

(general)A liquid product from crude oil used to generate heat or power.

Example

• Fuel oil is commonly used in home heating systems.

C1Industry

(technical)A refined oil used in furnaces, boilers, or engines, especially in industrial or marine settings.

Example

• Many factories rely on fuel oil to run their boilers.
• Ships often use heavy fuel oil for their engines.

C1Petroleum

(technical)The heaviest commercial oil obtained from crude oil, used primarily for combustion.