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1. Of or relating to the phase of the menstrual cycle immediately following ovulation, characterized by secretion of progesterone.
a. Of or relating to progesterone and its actions.
b. Having actions similar to progesterone. Used of a drug.


1. (Physiology) of or relating to the phase of the menstrual cycle, lasting approximately 14 days, during which the uterus is prepared for pregnancy by the secretion of progesterone from the corpus luteum
2. (Physiology) preceding gestation; before pregnancy


(ˌproʊ dʒɛˈsteɪ ʃə nl)

1. prepared for pregnancy, as the lining of the uterus prior to menstruation or in the early stages of gestation itself.
2. of, noting, or characteristic of the action of progesterone.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.progestational - of or relating to progesterone (or to a drug with effects like those of progesterone)
2.progestational - preceding and favoring gestation; of or relating to physiological changes associated with ovulation and formation of the corpus luteum
References in periodicals archive ?
Given that after 24 weeks, there was no change in serum estradiol levels or vaginal or endometrial atrophy, this implies no need to oppose the estrogen with a progestational agent, although 24 weeks is certainly not the same as long-term use.
15] Oral contraceptives, progestational agents, and gonadotropin releasing hormone analogs have been used to induce amenorrhea.
We typically expect pregnancy to lower the activity of Endo by ending menses during pregnancy, thus decreasing the retrograde seeding of endometrium in the pelvis and by providing a progestational environment which has been considered an effective treatment strategy for Endo.
This was equally the case regardless of whether the mother had gestational or progestational diabetes.
John Rock, questions regarding the valid use of progestational steroids are raised, and moralists see the drugs as valid to use for therapeutic reasons, but not for contraception.
Tibolone exerts progestational inhibition of matrix metalloproteinase expression in human endometrial stromal cells.
The present case history highlights that spontaneous pregnancy can occur in patients with hypopituitarism and pregnancy can be continued without progestational support.
Its mechanism of action is by inhibiting steroidogenesis and by inducing a progestational withdrawal effect at the level of the endometrium.
Would giving a different estrogen or progestational agent change the result?
They could not be on antineoplastic chemotherapy, androgens, estrogens, or progestational agents.
also assessed the estrogenic, androgenic and progestational activities of 72 flavonoids, including compounds 1 and 2, and the result was similar to ours, in which compounds 1 and 2 displayed the strongest estrogenicity (Rachel et al.