corpus luteum

noun

corpus lu·​te·​um -ˈlü-tē-əm How to pronounce corpus luteum (audio)
plural corpora lutea -ˈlü-tē-ə How to pronounce corpus luteum (audio)
: a yellowish mass of progesterone-secreting endocrine tissue that forms immediately after ovulation from the ruptured graafian follicle in the mammalian ovary
abbreviation CL

Examples of corpus luteum in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
The corpus luteum makes the hormones needed to maintain pregnancy until the placenta has fully formed. Sarah Bradley, Health, 9 Oct. 2024 During this time, a temporary cluster of cells called the corpus luteum will form on your ovary. Corey Whelan, Verywell Health, 18 Sep. 2024 The lining of the uterus (endometrium) and the corpus luteum will dissipate, and your body will prepare for menstruation.3 Hormonal Fluctuations and Your Menstrual Cycle Some people have very regular periods, but others don't. Corey Whelan, Verywell Health, 18 Sep. 2024 The sac does not dissolve after releasing the egg (corpus luteum cyst). Heather Jones, Verywell Health, 14 Aug. 2024 The corpus luteum produces the hormones progesterone and estrogen, both of which are necessary to thicken the lining of your uterus in order to support a pregnancy. Christin Perry, Parents, 22 July 2024 During the luteal phase of your cycle, your body forms a corpus luteum, which is a ball of cells that form on your ovary. Christin Perry, Parents, 22 July 2024 Luteal phase: This occurs after a follicle in the ovary releases the egg and changes into the corpus luteum. News & Views, Health, 23 Mar. 2024 The corpus luteum continues to produce progesterone until about 10 weeks, when the placenta takes over its production. Lambeth Hochwald, Parents, 7 Jan. 2024

Word History

Etymology

borrowed from New Latin corpus lūteum "yellow body"

First Known Use

1788, in the meaning defined above

Time Traveler
The first known use of corpus luteum was in 1788

Dictionary Entries Near corpus luteum

Cite this Entry

“Corpus luteum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corpus%20luteum. Accessed 15 Nov. 2024.

Kids Definition

corpus luteum

noun
cor·​pus lu·​te·​um
ˌkȯr-pəs-ˈlüt-ē-əm
plural corpora lutea
ˌkȯr-p(ə-)rə-ˈlüt-ē-ə
: a yellowish mass of tissue formed in a graafian follicle in the ovary of a mammal after the egg is released

Medical Definition

corpus luteum

noun
corpus lu·​te·​um -ˈlüt-ē-əm, -lü-ˈtē-əm How to pronounce corpus luteum (audio)
plural corpora lutea -ə How to pronounce corpus luteum (audio)
: a yellowish mass of progesterone-secreting endocrine tissue that consists of pale secretory cells derived from granulosa cells, that forms immediately after ovulation from the ruptured graafian follicle in the mammalian ovary, and that regresses rather quickly if the ovum is not fertilized but persists throughout the ensuing pregnancy if it is fertilized

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