Um·bil·i·car·ia | \ˌəmˌbiləˈka(a)rēə\

Definition of Umbilicaria 

: a small genus related to Lecanora and composed of foliose umbilicate lichens that are used especially in folk medicine as a purgative — see rock tripe

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History and Etymology for Umbilicaria

New Latin, from Late Latin umbilicaris umbilical (from Latin umbilicus navel + -aris -ar) + New Latin -ia

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to reject or criticize sharply

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