NCIt definition : Of or pertaining to the rectum.;
Alternative definition : NCI-GLOSS: By or having to do with the rectum. The rectum is the last 6 inches of
the large intestine and ends at the anus.; EDQM-HC: Relating to the rectum as the intended site of administration, where the
pharmaceutical product is administered via the anal canal, for local action in the
rectum or for systemic action after absorption via the rectum.;