[ proh-je-stey-shuh-nl ]
/ ˌproʊ dʒɛˈsteɪ ʃə nl /
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adjective Medicine/Medical.
prepared for pregnancy, as the lining of the uterus prior to menstruation or in the early stages of gestation itself; progravid.
of, noting, or characteristic of the action of progesterone; inducing a progravid state.
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Origin of progestational

1920–25; pro-1 + gestational
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for progestational

/ (ˌprəʊdʒɛˈsteɪʃənəl) /

adjective physiol
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
preceding gestation; before pregnancy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for progestational

[ prō′jĕs-tāshə-nəl ]

Of or relating to the phase of the menstrual cycle immediately following ovulation, characterized by secretion of progesterone.
Of or relating to progesterone and its actions.
Having actions similar to progesterone. Used of a drug.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.