variants:
or chiefly British caecum
Definition of cecum
: a cavity open at one end (such as the blind end of a duct)
especially
: the blind pouch at the beginning of the large intestine into which the ileum opens from one side and which is continuous with the colon
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Merriam-Webster unabridged
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Time Traveler for cecum
The first known use of cecum was circa 1721
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