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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