Frommid- +‎gut.

midgut (pluralmidguts)

1. (biology,anatomy,embryology) The central loop of thealimentary canal of anembryo between theforegut and thehindgut, in humans and some other animals.
2. (biology,anatomy,medicine) The developed counterpart in the adult: theintermediate part of thealimentary canal, which in humans runs from the second half of theduodenum through the proximal two-thirds of thetransverse colon.

• alimentary canal
• digestive tract
• gut
• gastrointestinal tract

• foregut
• hindgut