(redirected from releasin)
Also found in: Thesaurus, Medical, Encyclopedia.


A female hormone secreted by the corpus luteum that helps soften the cervix and relax the pelvic ligaments in childbirth.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
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.