What is "resorcinol"

n. (context organic compound English) The diphenol meta-dihydroxy benzene, used as a mild antiseptic and in many industrial applications; isomeric with catechol and hydroquinone.

n. a crystalline phenol obtained from various resins; used in ointments for acne and in dandruff shampoos

Resorcinol (or resorcin) is a benzenediol ( m-dihydroxybenzene).