peritoneum

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Macrophages are present in very high numbers in the lungs and the peritoneum, which is the lining of the abdomen.

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Definitions (3)

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  1. noun The serous membrane that lines the walls of the abdominal cavity and folds inward to enclose the viscera.

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Etymologies (1)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Middle English, from Late Latin peritonaeum, from Greek peritonaion, from peritonaios, stretched across, from peritonos, stretched around : peri-, peri- + teinein, to stretch; see ten- in Indo-European roots.
 

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/pɛrɪtoʊkˈnium/
by American Heritage

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