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
Tang said this can be attributed to the fact that a doctor is severing a blood vessel that is situated between the uterus and the ovary.
—
Sandra Rose Salathe, Flow Space, 15 May 2026
There are women who cannot carry pregnancies for a variety of reasons — genetic conditions, cancer and loss of uterus, for example.
—Ann Marie Luft, The Orlando Sentinel, 14 May 2026
An approximated 10% of people with uteruses worldwide who are of reproductive age live with endometriosis, according to the World Health Organization.
—Kimi Robinson, USA Today, 14 May 2026
The hormone helps maintain the inside of the uterus, and without it, the uterus will expel its contents.
—Jen Christensen, CNN Money, 8 May 2026
See All Example Sentences for uterus
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Sandra Rose Salathe, Flow Space, 15 May 2026
There are women who cannot carry pregnancies for a variety of reasons — genetic conditions, cancer and loss of uterus, for example.
—Ann Marie Luft, The Orlando Sentinel, 14 May 2026
An approximated 10% of people with uteruses worldwide who are of reproductive age live with endometriosis, according to the World Health Organization.
—Kimi Robinson, USA Today, 14 May 2026
The hormone helps maintain the inside of the uterus, and without it, the uterus will expel its contents.
—Jen Christensen, CNN Money, 8 May 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 21 May. 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
