極ごく超ちょう音おん速そくMeaningsNoun1. hypersonic speedOther readings極きょく超ちょう音おん速そくKanji used極extreme超exceed音sound速fastComposed of極ごくquite; very; 10^48; quindecillionAdverb超ちょう音おん速そくsupersonic speedNoun