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Pronunciation varies by accent · noun
(chemistry) Any isomer of octane except the normal, straight-chain one; especially 2,2,4-trimethylpentane..
Use iso-octane when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Iso-octane means (chemistry) Any isomer of octane except the normal, straight-chain one; especially 2,2,4-trimethylpentane..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use iso-octane where its definition matches the intended context.
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