plural noun Os·te·ich·thy·es \ˌästēˈikthēˌēz\

Definition of Osteichthyes

in some classifications

  1. :  a class or other category of fishes including the lungfishes, crossopterygians, teleosts, and especially formerly the arthrodires and ostracoderms and distinguished from other forms resembling fish by the presence of true bone in their skeleton — compare chondrichthyes

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Origin and Etymology of osteichthyes

New Latin, from oste- + Greek ichthyes, plural of ichthys fish — more at ichthus

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to criticize severely

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