noun, plural uteri [yoo-tuh-rahy] , uteruses. Anatomy, Zoology.
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.

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

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World English Dictionary
uterus (ˈjuːtərəs)
n , pl uteri
1.  anatomy Nontechnical name: womb 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
[C17: from Latin; compare Greek hustera womb, hoderos belly, Sanskrit udara belly]

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Word Origin & History

1615, from L. uterus "womb, belly" (pl. uteri), from PIE base *udero- "abdomen, womb, stomach" (cf. Skt. udaram "belly," Gk. hystera "womb," Lith. vederas "stomach," O.C.S. vedro "bucket").
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

uterus u·ter·us (yōō'tər-əs)
n. pl. u·ter·us·es or u·ter·i (yōō'tə-rī')
A hollow muscular organ consisting of a body, fundus, isthmus, and cervix located in the pelvic cavity of female mammals, in which the fertilized egg implants and develops into the fetus. Also called metra, womb.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
uterus   (y'tər-əs)  Pronunciation Key 
Plural uteri (y'tə-rī') or uteruses
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. Also called womb. See more at menstrual cycle.
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American Heritage
Cultural Dictionary
uterus [(yooh-tuh-ruhs)]

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.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
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Example sentences for uterus
Detailed study of the rats revealed increased levels of gamma interferon in the
The neem oil enhanced the local immune response in the uterus.
High levels of progesterone do not cause edema within the uterus.
A retroverted uterus is usually diagnosed during a routine pelvic examination.
Images for uterus
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