rectum

[ rek-tuh m ]

/ ˈrɛk təm /

the comparatively straight, terminal section of the intestine, ending in the anus.

Origin of rectum

1535–45; < New Latin rēctum ( intestīnum) the straight (intestine)

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, which carries away the solid waste matter from the bowels.

The Sex Side of Life |Mary Dennett
Rectum, rek′tum, n. the lowest part of the large intestine:—pl.

Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) |Various
"Rectum" followed "exterius" in the written copy, wherein "s. albidus" and "antice sinu excavata" were not to be found.

The Journal of the Proceedings of the Linnean Society - Vol. 4 |Various

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

/ (ˈrɛktəm) /

the lower part of the alimentary canal, between the sigmoid flexure of the colon and the anus

C16: shortened from New Latin rectum intestinum the straight intestine

rectum

[ rĕk′təm ]

The terminal portion of the large intestine, extending from the sigmoid flexure to the anal canal.

rectum

[ rĕk′təm ]

The last section of the digestive tract, extending from the colon to the anus, in which feces is stored for elimination from the body.

rectal adjective

rectum

The outermost portion of the large intestine. Feces are stored in the rectum until they are passed out of the body through the anus.