Wiktionary
chorionic gonadotropin
n. A hormone secreted by the chorion of the placenta. Its role is to maintain the corpus luteum.
Usage examples of "chorionic gonadotropin".
Oncologists use something called blood markers to track the progress of the disease: the levels of various proteins in your blood such as human chorionic gonadotropin (HCG) and alpha-fetoprotein (AFP) indicate how much cancer is in the body.