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A female hormone secreted by the corpus luteum that helps soften the cervix and relax the pelvic ligaments in childbirth.


1. (Biochemistry) a mammalian polypeptide hormone secreted by the corpus luteum during pregnancy, which relaxes the pelvic ligaments
2. (Pharmacology) a preparation of this hormone, used to facilitate childbirth
[C20: from relax + -in]


(rɪˈlæk sɪn)

a polypeptide hormone, produced by the corpus luteum during pregnancy, that causes the pelvic ligaments and cervix to relax during pregnancy and delivery.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.relaxin - hormone secreted by the corpus luteum during the last days of pregnancy; relaxes the pelvic ligaments and prepares the uterus for labor
endocrine, hormone, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
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It's goin formerl charts t the figh Roy "taking o releasin to the T England Greates And h to say w "Is th me with Chubby alive?
the company will be releasin g skin and sports nutrit ion products later th is year along with a second wave of vita mins and supplement products.
And, based on the sustainability factors outlined and measured, ec-H2O technology provided superior environmental, economic and social benefits over the scrubber-dryer using traditional chemicals by using 70 % less water, releasin g no used detergent discharge into water systems, eliminating chemical residue, enhancing worker safety, and reducing costs for purchasing and disposing of chemicals.