(pharmacology) A synthetic progesterone C₂₂H₃₂O₃ that is administered by injection as a long-acting contraceptive or is taken orally especially to treat amenorrhea and abnormal uterine bleeding and in conjunction with estrogen to relieve the symptoms of menopause and prevent osteoporosis.

(pharmacology) Synonym of medroxyprogesterone, trademark Depo-Provera.