Entry 1 sense Webster, 1913 Melam /(mē"lăm)/ · Me·lam · IPA 01 n. A white or buff-colored granular powder, C6H9N11, obtained by heating ammonium sulphocyanate. 1. A white or buff-colored granular powder, C6H9N11, obtained by heating ammonium sulphocyanate.(Chem.)