Last Updated
：2025/11/20
iso-octane
（ plural ）
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(chemistry) Any isomer of octane except the normal, straight-chain one; especially 2,2,4-trimethylpentane.
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iso-octane
The fuel sample contained a significant amount of iso-octane, which raised the octane rating and reduced knocking in the engine.
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The fuel sample contained a significant amount of iso-octane, which raised the octane rating and reduced knocking in the engine.
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