Definitions

1. noun

a high-octane fuel or gasoline with a high energy content, especially in relation to its octane rating

“The car runs on high-octane gasoline.”

2. noun

a measure of the resistance of a fuel to engine knocking or pinging

“The octane rating of the fuel was lower than expected.”

3. noun

a hydrocarbon with the general formula C8H18, especially isooctane

“The octane is a common component of gasoline.”

4. adjective

designed to operate at high speeds or with high energy

“The high-performance engine was a high-octane machine.”

5. adjective

relating to or denoting the high-octane fuel or gasoline

“The high-octane fuel was more expensive than regular gasoline.”