IPA: /prəʊˈdʒɛstɪn/
KK: /proʊˈdʒɛstɪn/
A substance that acts like the hormone progesterone, which is important for regulating various functions in the body, especially in the female reproductive system.
Doctors may prescribe progestin to help regulate menstrual cycles.
Progestin is formed from "pro-" (meaning in favor of or supporting) and "gestare" (meaning to carry or bear). The word refers to substances that support or maintain pregnancy by promoting the gestation process.
Think of 'pro-' meaning in favor of and 'gestare' meaning to carry — progestin is something that supports the carrying of a pregnancy.