[ ab-duh-muh n, ab-doh- ]
/ ˈæb də mən, æbˈdoʊ- /


Anatomy, Zoology.
  1. the part of the body of a mammal between the thorax and the pelvis; belly.
  2. the cavity of this part of the body containing the stomach, intestines, etc.
  3. (in nonmammalian vertebrates) a region of the body corresponding to, but not coincident with, this part or cavity.
Entomology. the posterior section of the body of an arthropod, behind the thorax or the cephalothorax.

Nearby words

  1. abdicant,
  2. abdicate,
  3. abdication,
  4. abdicative,
  5. abdom.,
  6. abdomin-,
  7. abdominal,
  8. abdominal angina,
  9. abdominal cavity,
  10. abdominal crunch

Origin of abdomen

1535–45; (< Middle French) < Latin abdōmen belly

Related formspost·ab·do·men, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for abdomen

British Dictionary definitions for abdomen


/ (ˈæbdəmən, æbˈdəʊ-) /


the region of the body of a vertebrate that contains the viscera other than the heart and lungs. In mammals it is separated from the thorax by the diaphragm
the front or surface of this region; bellyRelated adjective: coeliac
(in arthropods) the posterior part of the body behind the thorax, consisting of up to ten similar segments
Derived Formsabdominal (æbˈdɒmɪnəl), adjectiveabdominally, adverb

Word Origin for abdomen

C16: from Latin; origin obscure

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

Word Origin and History for abdomen



1540s, "belly fat," from Latin abdomen "belly," of unknown origin, perhaps from abdere "conceal," with a sense of "concealment of the viscera," or else "what is concealed" by proper dress. De Vaan, however, finds this derivation "unfounded." Purely anatomical sense is from 1610s. Zoological sense of "posterior division of the bodies of arthropods" first recorded 1788.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for abdomen


[ ăbdə-mən, ăb-dōmən ]


The part of the body that lies between the chest and the pelvis and encloses the stomach, intestines, liver, spleen, and pancreas.belly venter

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for abdomen


[ ăbdə-mən ]

In vertebrates, the portion of the body between the thorax and pelvis, containing the stomach, intestines, liver, and other organs. In mammals, the abdomen is separated from the thorax by the diaphragm.
In arthropods, the last, most posterior segment of the body.
Related formsabdominal adjective (ăb-dŏmə-nəl)

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for abdomen


[ (ab-duh-muhn, ab-doh-muhn) ]

The part of the body between the thorax (chest) and pelvis that encloses the organs of the abdominal cavity; the belly.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.