noun An·cy·loc·er·as \ˌansəˈläsərəs\

Definition of Ancyloceras

  1. :  a genus of ammonoids having a partly uncoiled shell and the aperture of the living chamber directed toward the coiled part

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Origin and Etymology of ancyloceras

New Latin, from ankyl- + -ceras

First Known Use: 1842

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to criticize severely

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