- the comparatively straight, terminal section of the intestine, ending in the anus.
Origin of rectum
Examples from the Web for rectum
Rectum, which carries away the solid waste matter from the bowels.The Sex Side of Life
Rectum, rek′tum, n. the lowest part of the large intestine:—pl.
The Sphincter is two Fingers broad, to open and close the Rectum.The Compleat Surgeon, or the Whole Art of Surgery Explain'd in a Most Familiar Method
Charles Gabriel Le Clerc
Rectum I take to indicate that the instrument was straight and not a curved bistoury.Surgical Instruments in Greek and Roman Times
John Stewart Milne
"Rectum" followed "exterius" in the written copy, wherein "s. albidus" and "antice sinu excavata" were not to be found.
- the lower part of the alimentary canal, between the sigmoid flexure of the colon and the anus
Word Origin and History for rectum
early 15c., from Latin intestinum rectum "straight intestine," in contrast to the convolution of the rest of the bowels, from neuter past participle of regere "to straighten" (see regal). A loan-translation of Greek apeuthysmeon enteron, "the name given to the lowest part of the large intestine by Galen, who so called it because he dissected only animals whose rectum (in contradistinction to that of man) is really straight" [Klein].
- The terminal portion of the large intestine, extending from the sigmoid flexure to the anal canal.
- The last section of the digestive tract, extending from the colon to the anus, in which feces is stored for elimination from the body.