Meaning of “high-octane” in the English Dictionary

british dictionary

"high-octane" in British English

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high-octaneadjective [ before noun ]

uk /ˌhaɪˈɒk.teɪn/ us /ˌhaɪˈɑːk.teɪn/

(Definition of “high-octane” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)