penicillic acid
noun
pen·i·cil·lic acid
| \ ˌpen-ə-ˌsil-ik-
\
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Medical Definition of penicillic acid
: a crystalline antibiotic unsaturated keto acid C8H10O4 or the tautomeric hydroxy lactone produced by several molds of the genera Penicillium and Aspergillus