- the front part of a bird's stomach, containing digestive glands
- the thin-walled front part of the stomach of many invertebrates, as earthworms and lobsters
Origin of proventriculusModL: see pro- and ventriculus
- The division of the stomach in birds that secretes digestive enzymes and passes food from the crop to the gizzard.
- A similar digestive chamber in certain insects and worms.
Origin of proventriculuspro- 2Latin ventriculus stomach diminutive of venter belly