双曲正弦 shuāngqūzhèngxián hyperbolic sine Origin Definitions Defs Strokes Stroke Words Sentences Sents 双曲 雙曲 shuāngqū hyperbolic relating to a hyperbola or hyperbolic functions正弦 zhèngxián sine (math) sine; one of the trigonometric functions, defined in a right-angled triangle as the ratio of the side opposite a given angle to the hypotenuse