noun Medicine/Medical.
- See under GI series.
noun
- gastrointestinal series: x-ray examination of the upper or lower gastrointestinal tract after barium sulfate is given rectally (barium enema) or orally as a contrast medium.
noun
- an injection into the rectum of a preparation of barium sulphate, which is opaque to X-rays, before X-raying the lower alimentary canal
n.
- The administration of barium in enema form for radiographic study of the lower intestinal tract.contrast enema