noun Eus·the·nop·te·ron \ˌyüsthəˈnäptəˌrän\

Definition of Eusthenopteron

  1. :  a genus of Upper Devonian lobe-finned fishes (order Rhipidistia)

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Origin and Etymology of eusthenopteron

New Latin, from eustheno- (from Greek eusthenēs strong, from eu- + -sthenēs, from sthenos strength) + Greek pteron wing; from the strongly developed fins — more at asthen-, feather

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to criticize severely

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