resorcinol

(re-zor'sJ-nol) [resin orcin L. oleum, oil.] i (U.S.) Resorcin, me tad i hydroxy benzene, CaHjOj; a diatomic phenol obtained from sodium benzene me tad i sulphonic acid by heating with sodium hydroxide; a white crystalline powder soluble in water; employed internally for the relief of nausea, asthma, whooping cough, and diarrhea in doses of gr. 5-10 (o. 3-0 6), but chiefly as an external antiseptic in psoriasis, eczema, seborrhea, and ringworm. Pyrocatechin and hydroquinone are isomers of resorcinol. 2. A compound of equal parts of resorcinol (i) and iodoform, a brown powder; employed as an antiseptic dusting powder for wounds, ulcers, etc., and in 5 to 15 per cent, ointment in psoriasis and other skin diseases, r. eucalyp'tol, a white powder, antiseptic; employed externally in ointment or solution in the treatment of skin diseases, and in aqueous solution by inhalation in pulmonary tuberculosis, r. monac'etate, euresol. r.phthal'- ein anhy'dride, fluorescein, r. salol, employed as an intestinal antiseptic in doses of gr. 3-8 (0.2-0.5).