hippopotamus
Word family nounhippopotamusadjectivehippopotamian
hip·po·pot·a·mus /ˌhɪpəˈpɒtəməs $ -ˈpɑː-/ noun (plural hippopotamuses or hippopotami /-maɪ-/) [countableC] Origin hippopotamus (1500-1600) Latin Greek, from hippos “horse” + potamos “river”