uter·​us | \ ˈyü-tə-rəs How to pronounce uterus (audio) , ˈyü-trəs \
plural uteri\ ˈyü-​tə-​ˌrī How to pronounce uterus (audio) \ or uteruses

Definition of uterus

1 : a muscular organ of the female mammal for containing and usually for nourishing the young during development prior to birth

called also womb

2 : a structure in some lower animals analogous to the uterus in which eggs or young develop

Examples of uterus in a Sentence

Recent Examples on the Web An ultrasound found an abnormally thick lining in her uterus, which required a bioposy. Sandee Lamotte, CNN, "Doctors worry women aren't getting the health care they need during pandemic," 4 Dec. 2020 The Bonner family is currently testing intrauterine insemination at their clinic, which involves placing sperm inside a woman's uterus to facilitate fertilization. Coral Murphy, USA TODAY, "At-home fertility tests help women undergoing treatments make progress amid coronavirus," 23 Nov. 2020 Endometriosis is a condition in which the lining that normally grows inside the uterus grows outside of it. Sarah Jacoby, SELF, "Emma Roberts Had Undiagnosed Endometriosis for Years Before Her Pregnancy," 11 Nov. 2020 In the latter case, Bishop says, a pregnant individual may opt to have a procedure called a dilation and curettage (D&C), during which doctors remove the tissue from inside the uterus. Ashley Abramson, Allure, "Your Guide to Dealing With a Miscarriage," 30 Oct. 2020 My uterus had been enlarged to the size of a woman who had just completed her first trimester. Rose Afriyie, Glamour, "Freezing My Eggs In a Pandemic as a Black Woman Over 35," 9 Dec. 2020 Meanwhile, Fania and Fátima remained in Mexico, waiting, trying to guess the best moment to cross the border and request asylum, knowing their choice could cost them their children or their uterus. Alice Driver, Longreads, "Motherhood on the Line," 2 Dec. 2020 Most commonly that tissue shows up on the other reproductive organs that are near the uterus, such as the ovaries or fallopian tubes. Sarah Jacoby, SELF, "Olivia Culpo Just Had Surgery for ‘Excruciatingly Painful’ Endometriosis," 20 Nov. 2020 After birth via Cesarean section, the uterus will be removed unless the patient wants another child. al, "Alabama hospital first in region to start uterus transplant program," 19 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'uterus.' 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 uterus

14th century, in the meaning defined at sense 1

History and Etymology for uterus

Middle English, from Latin, belly, womb; probably akin to Greek hoderos belly, Sanskrit udara

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Time Traveler for uterus

Time Traveler

The first known use of uterus was in the 14th century

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Statistics for uterus

Last Updated

14 Jan 2021

Cite this Entry

“Uterus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uterus. Accessed 19 Jan. 2021.

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How to pronounce uterus (audio)

English Language Learners Definition of uterus

medical : the organ in women and some female animals in which babies develop before birth


uter·​us | \ ˈyü-tə-rəs How to pronounce uterus (audio) \
plural uteruses or uteri\ ˈyü-​tə-​ˌrī \

Kids Definition of uterus

: the organ of a female mammal in which the young develop before birth


uter·​us | \ ˈyüt-ə-rəs How to pronounce uterus (audio) \
plural uteri\ -​ˌrī How to pronounce uterus (audio) \ also uteruses

Medical Definition of uterus

: an organ in female mammals for containing and usually for nourishing the young during development prior to birth that consists of a greatly modified and enlarged section of an oviduct (as in rodents and marsupials) or of the two oviducts united (as in the higher primates including humans), that has thick walls consisting of an outer serous layer, a very thick middle layer of smooth muscle, and an inner mucous layer containing numerous glands, and that during pregnancy undergoes great increase in size and change in the condition of its walls

called also womb

— see cervix sense 2a, corpus uteri, endometrium, fundus sense c, myometrium, perimetrium

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More from Merriam-Webster on uterus

Nglish: Translation of uterus for Spanish Speakers

Britannica English: Translation of uterus for Arabic Speakers

Britannica.com: Encyclopedia article about uterus

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