A large, semi-aquatic, herbivorous (plant-eating) African mammal (Hippopotamus amphibius). / Any similar animal of the family Hippopotamidae.

A large four-toed, four-legged mammal native to western Africa (Hexaprotodon liberiensis, syn. Choeropsis liberiensis), similar to but half the height of the common hippopotamus.

plural of hippopotamus

Resembling or characteristic of a hippopotamus.

plural of pygmy hippopotamus

rare spelling of hippopotamuses, the plural of hippopotamus