Barium enema

Definition of barium enema

barium enema

(BAYR-ee-um EH-neh-muh)
A procedure in which a liquid that contains barium sulfate is put through the anus into the rectum and colon. Barium sulfate is a silver-white metallic compound that helps show pictures of the colon, rectum, and anus on an x-ray.

Source: NCI Dictionary of Cancer Terms