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pentachlorophenol

pen·ta·chlo·ro·phe·nol

noun
\ˌpent-ə-ˌklōr-ə-ˈfē-ˌnōl, -ˌnȯl-, -ˌklȯr-, -fi-ˈ\

: a crystalline compound C₆Cl₅OH used especially as a wood preservative, insecticide, and fungicide—called also PCP

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