Dictionary![]() ![]() rec•tumPronunciation: (rek'tum), [key] —n., —pl. -tums, -taPronunciation: (-tu). [key] Anat. the comparatively straight, terminal section of the intestine, ending in the anus. See diag. under intestine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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