Definition of hippopotamus noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌhɪpəˈpɒtəməs//
; NAmE NAmE//ˌhɪpəˈpɑːtəməs//
(informal hippo) (pl. hippopotamuses
BrE BrE//ˌhɪpəˈpɒtəməsɪz//
; NAmE NAmE//ˌhɪpəˈpɑːtəməsɪz//
, hippopotami
BrE BrE//ˌhɪpəˈpɒtəmaɪ//
; NAmE NAmE//ˌhɪpəˈpɑːtəmaɪ//
Wild mammals
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a large heavy African animal with thick dark skin and short legs, that lives in rivers and lakes See related entries: Wild mammals Word OriginMiddle English: via Latin from Greek hippopotamos, earlier hippos ho potamios ‘river horse’ (from hippos ‘horse’, potamos ‘river’).
See the Oxford Advanced American Dictionary entry: hippopotamus