human chorionic somatomammotropic hormone human chorionic so·ma·to·mam·mo·trop·ic hormone (sō'mə-tə-mām'ə-trŏp'ĭk, -trō'pĭk, sə-māt'ə-) or human chorionic so·ma·to·mam·mo·tro·pin (-mām'ə-trō'pĭn, -mə-mŏt'rə-pĭn)
n.
Abbr. HCS
See human placental lactogen.