睾酮 gāotóng testosterone Origin Definitions Defs Strokes Stroke Words Sentences Sents 睾 gāo noun abbreviation of 睾丸 睪丸 gāowán testicle A male reproductive organ in humans and certain animals that produces sperm and secretes male hormones.酮 tóng abbreviation of 甾酮 zāitóng steroid hormone sterone; a steroid containing a ketone group, such as a ketosteroid