progestational
adjective
pro·ges·ta·tion·al ˌprō-ˌje-ˈstā-shnəl 
-shə-nᵊl
: preceding pregnancy or gestation
especially : of, relating to, inducing, or constituting the modifications of the female mammalian system associated especially with ovulation and corpus luteum formation
progestational hormones
Word History
Etymology
pro- entry 1 + gestation + -al entry 1
Note: The term was apparently introduced by the American anatomist and embryologist George Washington Corner (1889-1981) in "Oestrus, Ovulation and Menstruation," Physiological Reviews, vol. 4, no. 3 (October, 1923), pp. 457-82.
First Known Use
1923, in the meaning defined above
Medical Definition
progestational
adjective
pro·ges·ta·tion·al ˌprō-ˌjes-ˈtā-shnəl, -shən-ᵊl
: preceding pregnancy or gestation
especially : of, relating to, inducing, or constituting the modifications of the female mammalian system associated especially with ovulation and corpus luteum formation
progestational hormones