uterus


uter·us

noun \ˈyü-tə-rəs, ˈyü-trəs\

medical : the organ in women and some female animals in which babies develop before birth

plural uter·us·es or uteri \ˈyü-tə-ˌrī\

Full Definition of UTERUS

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 lower animals analogous to the uterus in which eggs or young develop

Origin of UTERUS

Middle English, from Latin, belly, womb; probably akin to Greek hoderos belly, Sanskrit udara
First Known Use: 14th century

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

uter·us

noun \ˈyüt-ə-rəs\   (Medical Dictionary)
plural uteri \-ˌrī\ also uter·us·es

Medical Definition of UTERUS

: 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 2a, corpus uteri, endometrium, fundus c, myometrium, perimetrium

Illustration of UTERUS

uterus

noun    (Concise Encyclopedia)

Inverted-pear-shaped organ of the female reproductive system, in which the embryo and fetus develop during pregnancy. Lying over and behind the bladder, it is 2.5–3 in. (6–8 cm) long and about 2.5 in. (6 cm) across at the top, where the fallopian tubes enter it; at the other end, the cervix extends down into the vagina. The uterine lining (endometrium), a moist mucous membrane, changes in thickness during the menstrual cycle (see menstruation), being thickest at ovulation in readiness for a fertilized egg. The uterine wall, about 1 in. (2.5 cm) thick, expands and becomes thinner as a fetus develops inside. The cervix expands to about 4 in. (10 cm) for delivery. Disorders of the uterus include infections, benign and malignant tumours, prolapse, endometriosis, and fibroids (leiomyomas; see muscle tumour).

Variants of UTERUS

uterus or womb

Browse

Next Word in the Dictionary: utfangthief
Previous Word in the Dictionary: uterine
All Words Near: uterus

Seen & Heard

What made you want to look up uterus? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More