chlo·ro·phenol \| ̷ ̷ ̷ ̷+\noun alsochlor·phenol\(ˈ)klōr, -ȯr+\ (-s) Etymology: International Scientific Vocabulary chlor- + phenol 1.: any of three monochloro derivatives ClC6H4OH of phenol distinguished as ortho-chlorophenol, meta-chlorophenol, and para-chlorophenol and used chiefly as dye intermediates 2.: a chlorine derivative of a phenol — compare pentachlorophenol