peracetic acid
noun
per·ace·tic acid
| \ ˌpər-ə-ˌsēt-ik-
\
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Medical Definition of peracetic acid
: a corrosive toxic strongly oxidizing unstable pungent liquid acid C2H4O3 used chiefly in a solution in acetic acid or an inert solvent in bleaching, in organic synthesis, and as a fungicide and disinfectant