uterus

[ yoo-ter-uhs ]

noun

, Anatomy, Zoology.

, plural u·ter·i [yoo, -t, uh, -rahy], u·ter·us·es.

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

/ ˈjuːtərəs /

noun

1. 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 Nontechnical namewomb
2. the corresponding organ in other animals

uterus

/ yo̅o̅′tər-əs /

, Plural uteri yo̅o̅′tə-rī′

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

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.

Word History and Origins

Origin of uterus¹

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

Word History and Origins

Origin of uterus¹

C17: from Latin; compare Greek hustera womb, hoderos belly, Sanskrit udara belly

Example Sentences

These eggs were found to develop normally when fertilized in vitro and to become embryos or offspring when transplanted into the rat uterus.

From Science Daily

Without intervention, a constricted baby may fatally rupture the uterus, or cause tears that catastrophically haemorrhage.

From BBC

Osinoff denied that Cox had attempted to examine her uterus rectally, saying he had told the patient that he could do such an exam, which she declined.

From Los Angeles Times

If the infection was in Crain’s uterus, the fetus would likely need to be removed with a surgery.

From Salon

At that point, they should have offered to speed up the delivery or empty her uterus to stave off a deadly infection, more than a dozen medical experts told ProPublica.

From Salon