The Collaborative International Dictionary of English v.0.48:
Isorcin \I*sor"cin\, n. [Iso- + orcin.] (Chem.) A crystalline hydrocarbon derivative, metameric with orcin, but produced artificially; -- called also cresorcin. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Cresorcin \Cre*sor"cin\ (kr?-s?r"s?n), n. (Chem.) Same as Isorcin. [1913 Webster]