Enterotropic means related to or affecting the intestinal tract — having an affinity for, or an action directed at, the gut. The term describes viruses that replicate in the intestine, drugs formulated to act on the bowel wall, and hormones whose targets lie in the digestive tract. An enterotropic virus — the enteroviruses, norovirus, rotavirus — enters by the mouth, multiplies in the gut lining, and exits by the faecal route, which is why sanitation breaks its chain. In pharmacology, enterotropic delivery aims a drug’s effect at the intestine while sparing the rest of the body. The word belongs to the precise vocabulary of tropism — the tendency of agents to seek particular tissues — and it marks the intestine as a destination, whether for infection or for therapy.