noun Cten·acan·thus \ˌtenəˈkan(t)thəs, ˌtēn-\

Definition of Ctenacanthus

  1. :  a genus of Upper Devonian and Lower Permian sharks related to Cladoselache and known chiefly from its very stout fin spines

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Origin and Etymology of ctenacanthus

New Latin, from cten- + -acanthus

Seen and Heard

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a rounded knoll or a ridge of ice

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