uterus
noun
uter·us
ˈyü-tə-rəs 
ˈyü-trəs
plural uteri
ˈyü-tə-ˌrī
or uteruses
or uteruses
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 other animals (such as salamanders and nematodes) analogous to the mammalian uterus in which eggs or young develop
Examples of uterus in a Sentence
Recent Examples on the Web
These engineering innovations, implemented in a mobile support platform, represent the first working prototype of an artificial uterus for mammalian gestation.
—
Srishti Gupta, Interesting Engineering, 28 Mar. 2026
The vast majority of the time, an ectopic pregnancy takes place in a fallopian tube, which is a part of the reproductive system that is not able to stretch in the way the uterus can.
—Emily Brindley
health Reporter, Dallas Morning News, 27 Mar. 2026
Further, people seeking protection under the Americans with Disabilities Act for menstruation complications such as endometriosis, which occurs when tissue grows outside of the uterus and often causes severe pain during menstrual cycles, face an uphill battle.
—Ann Juliano, The Conversation, 24 Mar. 2026
The point was to reduce the horrible pelvic pain caused by her endometriosis (a condition in which estrogen-reliant endometrial tissue grows outside the uterus).
—Erica Sloan, SELF, 20 Mar. 2026
See All Example Sentences for uterus
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Srishti Gupta, Interesting Engineering, 28 Mar. 2026
The vast majority of the time, an ectopic pregnancy takes place in a fallopian tube, which is a part of the reproductive system that is not able to stretch in the way the uterus can.
—Emily Brindley
health Reporter, Dallas Morning News, 27 Mar. 2026
Further, people seeking protection under the Americans with Disabilities Act for menstruation complications such as endometriosis, which occurs when tissue grows outside of the uterus and often causes severe pain during menstrual cycles, face an uphill battle.
—Ann Juliano, The Conversation, 24 Mar. 2026
The point was to reduce the horrible pelvic pain caused by her endometriosis (a condition in which estrogen-reliant endometrial tissue grows outside the uterus).
—Erica Sloan, SELF, 20 Mar. 2026
See All Example Sentences for uterus
Cite this Entry
“Uterus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uterus. Accessed 31 Mar. 2026.
Copy CitationKids Definition
uterus
noun
uter·us
ˈyüt-ə-rəs
plural uteruses or uteri
-ˌrī
: the muscular organ of a female mammal in which the young develop before birth
called also womb
Medical Definition
uterus
noun
uter·us
ˈyüt-ə-rəs
plural uteri
-ˌrī
also uteruses
also uteruses
: 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, perimetriumLove words? Need even more definitions?
Merriam-Webster unabridged
