clavulanic acid
noun
clav·u·lan·ic acid
| \ ˌklav-yə-ˌlan-ik-
\
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Medical Definition of clavulanic acid
: a beta-lactam antibiotic C8H9NO5 produced by a bacterium of the genus Streptomyces (S. clavuligerus) that is a beta-lactamase inhibitor and is usually used in the form of its clavulanate salt of potassium especially in combination with amoxicillin — see augmentin