relaxin

noun

re·​lax·​in ri-ˈlak-sən How to pronounce relaxin (audio)
: a sex hormone of the corpus luteum that facilitates birth by causing relaxation of the pelvic ligaments

Example Sentences

Recent Examples on the Web That’s because at six weeks, your joints, including your knees and hips, are still feeling the effects of the hormone relaxin, which is produced during pregnancy. Tiffany Ayuda, SELF, 6 Oct. 2022 From an athlete’s perspective, an important hormone of note is relaxin, which is produced by the ovaries and the placenta. Hayden Carpenter, Outside Online, 20 May 2021 And because relaxin continues to have a strong presence throughout breastfeeding, loose ligaments can persist long after childbirth. Hayden Carpenter, Outside Online, 20 May 2021 But like most hormones, relaxin circulates in the blood and can affect all ligaments, not just those associated with pregnancy. Hayden Carpenter, Outside Online, 20 May 2021 Meanwhile, the hormone relaxin loosens muscle ligaments to prepare for childbirth, which can also cause feet to spread and widen. Washington Post, 27 Apr. 2022 During pregnancy, the body releases a hormone called relaxin, which relaxes ligaments in preparation for childbirth. Ellen O'connell Whittet, Glamour, 19 Apr. 2021 The placenta also produces a hormone called relaxin, levels of which peak in the first trimester and then right before delivery. Garnet Henderson, Glamour, 26 Nov. 2020 Your posture and movement habits change during pregnancy from carrying around extra weight in new places, and your body also produces the hormones relaxin and progesterone, which loosen your ligaments and joints. Anna Nowogrodzki, New York Times, 17 Apr. 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'relaxin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1930, in the meaning defined above

Time Traveler
The first known use of relaxin was in 1930

Dictionary Entries Near relaxin

Cite this Entry

“Relaxin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/relaxin. Accessed 8 Feb. 2023.

Medical Definition

relaxin

noun
re·​lax·​in ri-ˈlak-sən How to pronounce relaxin (audio)
: a polypeptide sex hormone of the corpus luteum that facilitates birth by causing relaxation of the pelvic ligaments

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