pelvic cavity
noun
plural pelvic cavities
: the cavity within the bones of the pelvis (see pelvis sense 1) that is continuous above with the abdominal cavity and contains the internal reproductive organs, urinary bladder, sigmoid colon, and rectum
Endometriosis, for example, is a disorder in which fragments of the uterine lining migrate to other parts of the pelvic cavity, which can cause obstructions in the fallopian tubes, among other problems.—Parenting
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Merriam-Webster unabridged
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