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Medical Term:


Pronunciation: prō-jes′tō-jen


  1. Any agent capable of producing biologic effects similar to those of progesterone; most progestogens are steroids like the natural hormones.
  2. A synthetic derivative from testosterone or progesterone that has some of the physiologic activity and pharmacologic effects of progesterone; progesterone is antiestrogenic, whereas some progestogens have estrogenic or androgenic properties in addition to progestational activity.

[pro- + gestation + G. -gen, producing]