progesterone

noun
pro·​ges·​ter·​one | \ prō-ˈje-stə-ˌrōn \

Definition of progesterone

: a female steroid sex hormone C21H30O2 that is secreted by the corpus luteum to prepare the endometrium for implantation and later by the placenta during pregnancy to prevent rejection of the developing embryo or fetus also : a synthetic steroid resembling progesterone in action

Examples of progesterone in a Sentence

Recent Examples on the Web

As a general rule, multiphasic pills are designed in part to mimic the rise and fall of estrogen and progesterone levels during a regular menstrual cycle, thereby potentially reducing birth control side effects. SELF, "Here’s Exactly How to Find the Best Birth Control Pill for You," 14 Sep. 2018 For women at high risk of preterm delivery, a number of practices can help postpone delivery until 39 weeks, such as the use of a cervical cerclage or progesterone therapy, Ananth said. Mark Lieber, CNN, "US stillbirths and newborn deaths down 11.5%, study says," 14 May 2018 This time, the chatter revolves around Khloé’s low progesterone levels. Mariah Smith, The Cut, "The Kardashian Sisters Take a Break From Fertility Concerns by Playing Dress-Up," 26 Feb. 2018 The zinc found in oysters controls progesterone levels which are said to have a positive effect on the libido. Redbook, "Aphrodisiac Food & Wine Pairings to Prime Your Valentine," 9 Feb. 2011 Those faintly balmy conditions are linked to a surge in progesterone in the latter half of the menstrual cycle, called the luteal phase. Beth Mole, Ars Technica, "“Natural” birth-control app dogged by unwanted pregnancies gets FDA approval," 15 Aug. 2018 This protein is driven by progesterone, the hormone that surges to sustain a pregnancy. Marie Mccullough, Philly.com, "Can the abortion pill treat advanced lung cancer? This infertility expert wants to find out," 3 July 2018 What’s more, progesterone, while usually safe, can have cardiovascular and neurological side effects. Anna North, Vox, "What would America look like without Roe v. Wade? These teenagers are finding out.," 6 Apr. 2018 The Week After Your Period After a bumpy ride (literally!), your estrogen and progesterone hormone levels have gone back to normal — and so will your skin. Jillian Ruffo, Seventeen, "Why Your Period Makes You Break Out and How to Deal," 17 Feb. 2017

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

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First Known Use of progesterone

1935, in the meaning defined above

History and Etymology for progesterone

progestin + -sterone

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Last Updated

19 Dec 2018

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Time Traveler for progesterone

The first known use of progesterone was in 1935

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More Definitions for progesterone

progesterone

noun

English Language Learners Definition of progesterone

medical : a substance (called a hormone) that occurs naturally in women and female animals

progesterone

noun
pro·​ges·​ter·​one | \ prō-ˈjes-tə-ˌrōn \

Medical Definition of progesterone

: a female steroid sex hormone C21H30O2 that is secreted by the corpus luteum to prepare the endometrium for implantation and later by the placenta during pregnancy to prevent rejection of the developing embryo or fetus also : a synthetic steroid resembling progesterone in action

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More from Merriam-Webster on progesterone

Rhyming Dictionary: Words that rhyme with progesterone

Spanish Central: Translation of progesterone

Nglish: Translation of progesterone for Spanish Speakers

Britannica.com: Encyclopedia article about progesterone

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