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relaxin

[ ri-lak-sin ]

noun

, Biochemistry, Pharmacology.
  1. a polypeptide hormone produced by the corpus luteum during pregnancy that causes the pelvic ligaments and cervix to relax during pregnancy and delivery.

relaxin

/ rɪˈlæksɪn /

noun

  1. a mammalian polypeptide hormone secreted by the corpus luteum during pregnancy, which relaxes the pelvic ligaments
  2. a preparation of this hormone, used to facilitate childbirth

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Word History and Origins

Origin of relaxin1

First recorded in 1925–30; relax + -in 2

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Word History and Origins

Origin of relaxin1

C20: from relax + -in

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Example Sentences

There’s also some concern about the hormone relaxin, which relaxes joints to aid in the birthing process.

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