endometriosis
noun
en·do·me·tri·osis
ˌen-dō-ˌmē-trē-ˈō-səs 
: the presence and growth of tissue similar to endometrium in places other than the uterus and especially in the pelvis and abdomen that often results in severe pain and infertility
Endometriosis is not malignant, but it mimics cancer in the way it spreads and attaches itself to other organs—most commonly the ovary, bladder, and bowel.—
Consumer Reports
Consumer ReportsEndometriosis is one of the leading causes of female infertility and causes great pain and life disruption.—Paul G. Donohue
Paul G. DonohueExamples of endometriosis in a Sentence
Recent Examples on the Web
When the star said that she was ultimately diagnosed with endometriosis, something clicked for Albanese.
—Hannah Sacks, People.com, 26 Mar. 2025
Some of the symptoms of endometriosis can include pain during periods, and heavy bleeding during or between periods.
—Adrianna Rodriguez, USA TODAY, 6 Mar. 2025
In an exclusive interview with People, Suleman admits she's always wanted a big family, despite fertility issues caused by living with endometriosis.
—Annabelle Canela, Parents, 6 Mar. 2025
My endometriosis diagnosis was one of the most frustrating yet validating experiences of my life.
—Sarah Bence, Health, 4 Mar. 2025
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Hannah Sacks, People.com, 26 Mar. 2025
Some of the symptoms of endometriosis can include pain during periods, and heavy bleeding during or between periods.
—Adrianna Rodriguez, USA TODAY, 6 Mar. 2025
In an exclusive interview with People, Suleman admits she's always wanted a big family, despite fertility issues caused by living with endometriosis.
—Annabelle Canela, Parents, 6 Mar. 2025
My endometriosis diagnosis was one of the most frustrating yet validating experiences of my life.
—Sarah Bence, Health, 4 Mar. 2025
See All Example Sentences for endometriosis
Cite this Entry
“Endometriosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endometriosis. Accessed 4 Apr. 2025.
Copy CitationMedical Definition
endometriosis
noun
en·do·me·tri·osis
ˌen-dō-ˌmē-trē-ˈō-səs
plural endometrioses
-ˌsēz
: the presence and growth of tissue similar to endometrium in places other than the uterus and especially in the pelvis and abdomen and that often results in severe pain and infertility
The primary symptoms of endometriosis are pelvic pain, dysmenorrhea, dyspareunia, backache, dyschezia, dysuria, and infertility.—G. David Adamson, The Journal of the American Medical Association
G. David Adamson, The Journal of the American Medical AssociationAbout 40 percent of infertile women suffer from endometriosis.—Gigi Martino, Science News
see adenomyosis
Gigi Martino, Science NewsLove words? Need even more definitions?
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