octano

octane

noun ohk-TAH-noh Rare

Origin: from Greek oktō (eight), referring to the eight-carbon chain

Usage Note

Octano is the hydrocarbon used as a standard for measuring fuel quality; the índice de octano (octane rating) indicates a fuel's resistance to engine knock. It appears almost exclusively in technical, automotive, and chemistry contexts. The plural octanos is used when discussing octane numbers as a scale.

Examples

"Esta gasolina tiene un alto índice de octano."

Natural Translation

This gasoline has a high octane rating.

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