Dictionary.com
Thesaurus.com

uterus

American  
[yoo-ter-uhs] / ˈju tər əs /

noun

Anatomy, Zoology.
  • uteri,
    plural
  • uteruses
    plural
  1. the enlarged, muscular, expandable portion of the oviduct in which the fertilized ovum implants and develops or rests during prenatal development; the womb of certain mammals.


uterus British  
/ ˈjuːtərəs /

noun

  1. Nontechnical name: womb. anatomy a hollow muscular organ lying within the pelvic cavity of female mammals. It houses the developing fetus and by contractions aids in its expulsion at parturition

  2. the corresponding organ in other animals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

uterus Scientific  
/ yo̅o̅′tər-əs /
  • uteri
    plural
  1. The hollow, muscular organ of female mammals in which the embryo develops. In most mammals the uterus is divided into two saclike parts, whereas in primates it is a single structure. It lies between the bladder and rectum and is attached to the vagina and the fallopian tubes. During the menstrual cycle (estrus), the lining of the uterus (endometrium) undergoes changes that permit the implantation of a fertilized egg.

  2. Also called womb

  3. See more at menstrual cycle


uterus Cultural  
  1. A pear-shaped organ in the female reproductive system where the embryo or fetus develops until birth. The strong muscles of the uterus help push the baby out of the mother's body.


Other Word Forms

Noun Inflected Forms


Etymology

Origin of uterus

1605–15; < Latin: the womb, matrix; akin to Greek hystéra womb, Sanskrit udara belly


Compare meaning

How does uterus compare to similar and commonly confused words? Explore the most common comparisons:


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Perhaps more importantly, the inserter is thinner—a 3.7 mm diameter to Paragard’s 4.75—with a rounded tip designed to make pushing the tube through the nerve-dense cervix and into the uterus less painful.

From Slate ● Oct. 27, 2026

Aged 24, she was diagnosed with endometriosis - a condition that affects one in 10 women, where tissue similar to the lining of the womb grows outside of the uterus.

From BBC ● Oct. 25, 2026

Here’s what I know: There’s a fetus inside a woman’s uterus, and the fetus can communicate in an omniscient, echoing Minnie Mouse voice with its mother.

From Slate ● Sep. 26, 2026

The disease is present when tissue resembling the uterine lining grows outside the uterus.

From The Wall Street Journal ● Jul. 13, 2026

Soraya underwent a procedure called a hysteroscopy—Dr. Rosen inserted a tele­scope into Soraya’s uterus and took a look around.

From "The Kite Runner" by Khaled Hosseini

Kelsey Hatcher, 32, had given birth thrice, each time carrying one baby in one of the uteri, hospital officials said in a release Friday.

From Washington Times ● Dec. 23, 2023

And the odds of becoming pregnant in both uteri - a dicavitary pregnancy - were even slimmer, at "one in a million", according to the UAB.

From BBC ● Dec. 23, 2023

A painting of pink, green and yellow uteri strung on a clothesline hangs on a pale-yellow wall.

From Los Angeles Times ● Aug. 8, 2022

Her tonic promised to cure everything from menstrual cramps to infertility to prolapsus uteri.

From Salon ● Mar. 9, 2014

Prolapsus uteri sometimes gives rise to severe peri-uterine neuralgia, or what appears to be such; though it is difficult here to draw the line between neuralgia and myalgia.

From Neuralgia and the Diseases that Resemble it by Francis E. Anstie

She claimed to have a rare condition of having two uteruses and provided a fake NHS-branded letter apparently confirming the miscarriage, the court heard.

From BBC ● Mar. 20, 2025

These were implanted in the uteruses of normal cows in Brazil, and one transgenic calf was born.

From Science Daily ● Mar. 13, 2024

The book contains striking color illustrations of fetuses and uteruses at all stages of development and pregnancy — the consequences of what Granville called “morbid menstruation.”

From Washington Post ● Jul. 25, 2022

Indeed, it is possible that more clinicians in the future might ask those with uteruses if they want the option to remove their own IUD.

From Salon ● Sep. 27, 2021

Both of these uteruses were distinct and almost entirely separate.

From Anomalies and Curiosities of Medicine by Walter L. (Walter Lytle) Pyle

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember new words for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com