pro‧ges‧ter‧one /prəʊˈdʒestərəʊn $ proʊˈdʒestəroʊn/
noun [uncountable][
Date: 1900-2000;
Origin: pro- + gestation + -one]
a female sex
hormone which prepares the body for having a baby, and which is also used in
contraceptive drugs ⇒
oestrogen [TahlilGaran] Dictionary of Contemporary English ▲