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Webster 1913 Edition

Peritoneum

Perˊi-to-ne′um

,
Noun.
[L.
peritoneum
,
peritonaeum
, Gr. [GREEK], [GREEK], fr. [GREEK] to stretch all around or over;
περί
around + [GREEK] to stretch.]
(Anat.)
The smooth serous membrane which lines the cavity of the abdomen, or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or nearly closed, sac.
[Written also
peritonæum
.]

Webster 1828 Edition

Peritoneum

PERITONE'UM

,
Noun.
[Gr. about, and to stretch.] A thin, smooth, lubricous membrane investing the whole internal surface of the abdomen, and more or less completely, all the viscera contained in it.

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