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
Doll also emphasizes that people who have a uterus should be highly aware of the risks of endometrial cancer from estrogen-only treatments.
—
Tanya Lewis, Scientific American, 10 Nov. 2025
Hormone therapy consists of estrogen and progesterone (or estrogen only for women who do not have a uterus), and is the most effective treatment for menopause, and is the first recommendation, according to the North American Menopause Society.
—Laura Trujillo, USA Today, 10 Nov. 2025
Why Endometriosis Symptoms Persist After Menopause Endometriosis is a chronic, inflammatory condition that occurs when endometrial-like tissue grows outside of the uterus.
—Tabitha Britt, Flow Space, 29 Oct. 2025
During the procedure, a doctor places donor sperm directly into the patient’s uterus during ovulation, to increase the chances of conception.
—Chelsea Bailey, CNN Money, 25 Oct. 2025
See All Example Sentences for uterus
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Tanya Lewis, Scientific American, 10 Nov. 2025
Hormone therapy consists of estrogen and progesterone (or estrogen only for women who do not have a uterus), and is the most effective treatment for menopause, and is the first recommendation, according to the North American Menopause Society.
—Laura Trujillo, USA Today, 10 Nov. 2025
Why Endometriosis Symptoms Persist After Menopause Endometriosis is a chronic, inflammatory condition that occurs when endometrial-like tissue grows outside of the uterus.
—Tabitha Britt, Flow Space, 29 Oct. 2025
During the procedure, a doctor places donor sperm directly into the patient’s uterus during ovulation, to increase the chances of conception.
—Chelsea Bailey, CNN Money, 25 Oct. 2025
See All Example Sentences for uterus
Cite this Entry
“Uterus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uterus. Accessed 14 Nov. 2025.
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
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