What is "progestagen"

alt. 1 (context steroid hormone English) The steroid hormone progesterone. 2 (context steroid drug English) Any of a class of synthetic hormones which produce effects similar to progesterone (the only natural progestagen) and have antiestrogenic and antigonadotropic properties. n. 1 (context steroid hormone English) The steroid hormone progesterone. 2 (context steroid drug English) Any of a class of synthetic hormones which produce effects similar to progesterone (the only natural progestagen) and have antiestrogenic and antigonadotropic properties.