fuel oil

noun

1. an oil used for fuel, especially one used as a substitute for coal, as crude petroleum.

fuel oil

noun

1. a liquid petroleum product having a flash point above 37.8°C: used as a substitute for coal in industrial furnaces, domestic heaters, ships, and locomotives

Example Sentences

Contributions from solar, diesel and heavy fuel oil are even lower, accounting for 3%.

From BBC

This means that the industry is now making billions of euros by running its ships on cheap heavy fuel oil instead of cleaner fuel.

From Science Daily

Shipments of fuel oils, natural gas, and other fossil fuel products were also imported and exported.

From BBC

The cargo vessel itself is stable but has over 1.5m gallons of fuel oil and lube oil on board, Mr Gautier said.

From BBC

A video showed dense black smoke over the factory, said to be caused by burning fuel oil reservoirs.

From Seattle Times