What term refers to air or gas in the intestines?

The term that refers to air or gas in the intestines is "flatus." This term specifically denotes the gas that is expelled from the digestive system, typically through the rectum. Flatus is an important concept in understanding gastrointestinal health, as the presence and expulsion of gas are normal bodily functions.

Flatulence, while often used interchangeably with flatus, generally encompasses the entire process of passing gas and may include both the gas itself and its expulsion. Borborygmi refers to the rumbling or gurgling sounds produced by the movement of gas and fluid in the intestines, but it does not specifically denote the gas itself. Oliguria is unrelated to gas in the intestines; it refers to a condition characterized by abnormally low urine output.

Thus, "flatus" is the precise term indicating the gas that accumulates in the intestines.