Abdomen meaning

ăbdə-mən
The definition of abdomen is the middle area on a body between the chest and the hips, also called the belly.

An example of abdomen is the area that you exercise when doing a sit-up.

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The posterior segment of the body in arthropods.
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The part of the body that lies between the thorax and the pelvis and encloses the stomach, intestines, liver, spleen, and pancreas.
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The corresponding region in vertebrates other than mammals.
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In vertebrates.
  • The part of the body cavity from the thorax to the pelvic girdle, containing the digestive organs, etc.; belly: in mammals, the diaphragm separates this from the thorax.
  • The region of the trunk between the chest and pelvis.
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In arthropods, the posterior body segment containing the reproductive organs, etc.
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The part of the body that lies between the thorax and the pelvis and encloses the stomach, intestines, liver, spleen, and pancreas in humans and other mammals.
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The corresponding region in vertebrates other than mammals.
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The posterior segment of the body in arthropods.
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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.
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In arthropods, the last, most posterior segment of the body.
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(anatomy) The belly, or that part of the body between the thorax and the pelvis, not including the back; or in some lower vertebrates, the portion between the cardiac and caudal regions. [First attested in the early 17th century.]
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(anatomy) The cavity of the belly, which is lined by the peritoneum, and contains the viscera; often restricted in humans to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity. [First attested in the early 17th century.]

He was all bent over complaining of pains in the abdomen.

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(zoology, entomology) The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda. [First attested in the late 18th century.]
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Origin of abdomen

  • Latin abdōmen belly dhē- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • First attested in 1541. Borrowing from Middle French abdomen, borrowing from Latin abdomen, possibly from abdō (“conceal”), from ab (“away”) + dere (“to put, place”).

    From Wiktionary