極きょく超ちょう音おん速そくMeaningsNoun1. hypersonic speedOther readings極ごく超ちょう音おん速そくKanji used極extreme超exceed音sound速fastComposed of極きょくpole; climax; extreme; extremity; culmination; height; zenith; nadirNoun超ちょう音おん速そくsupersonic speedNoun