coal tar (redirected from Coal-tar)

coal tar (kl)

n.

A viscous black liquid containing numerous organic compounds that is obtained by the destructive distillation of coal and that has many uses including as raw material for many dyes, drugs, and paints.

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coal tar,

n an extract of coal used in combination with other compounds for the treatment of chronic skin diseases, such as eczema and psoriasis. Also a derivative of tobacco smoke that may act as an irritant and carcinogen.

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coal tar

a by-product obtained in destructive distillation of bituminous coal or wood; useful for its keratolytic, keratoplastic and antiseborrheic effects in ointments and shampoos for the treatment of skin disease.