Polyporus
noun
Po·lyp·o·rus
| \ pə-ˈlip-ə-rəs
\
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Medical Definition of Polyporus
: a genus (the type of the family Polyporaceae) of fungi having fruiting bodies that are sessile or borne on a stipe and including important pathogens of various trees and in some classifications the fungus (Fomes officinalis synonym P. officinalis) supplying the drug agaric formerly used to treat excessive perspiration