超音速 chāoyīnsù supersonic Origin Definitions Defs Strokes Stroke Words Sentences Sents 超 chāo verb to exceed To surpass, overtake, or go beyond a certain limit, person, or thing; to exceed a set standard or amount.音速 yīnsù speed of sound The speed at which sound waves travel through a medium; also referred to as 声速 shēngsù