progestational
adjective
pro·ges·ta·tion·al ˌprō-ˌje-ˈstā-sh(ə-)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
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Merriam-Webster unabridged



