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Definition of MCPB in English:

MCPB

noun

  • 4-(4-chloro-2-methylphenoxy)butanoic acid, C ₁₁ H ₁₃ ClO ₃, or one of its derivatives, used as a selective herbicide.

Origin

1950s. From m- + c- (in chloro-) + p- (in phenoxy-) + b-.