noun Gym·no·ca·lyci·um \ˌjim(ˌ)nōkəˈlis(h)ēəm\

Definition of Gymnocalycium

  1. :  a genus of low globular South American cacti with strongly tuberculate spiny ribs

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Origin and Etymology of gymnocalycium

New Latin, from gymn- + calyc- + -ium

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to criticize severely

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