supersonic
adj.
1919, "of or having to do with sound waves beyond the limit of human hearing," from super- + sonic. Attested from 1934 in sense of "exceeding the speed of sound" (especially as a measure of aircraft speed), leaving the original sense to ultrasonic(1923).
〔李〕[super-;son;-ica.] a.超声的，超声速的 ←son (L sonus)=sound 声音
〔蒋〕[super-超，son声音，ic形容词后缀，…的] 超音速的