Source : Webster's Revised Unabridged Dictionary (1913)

Melamine \Me*lam"ine\, n. (Chem.)
   A strong nitrogenous base, {C3H6N6}, produced from several
   cyanogen compounds, and obtained as a white crystalline
   substance, -- formerly supposed to be produced by the
   decomposition of melam. Called also {cyanuramide}.

Source : WordNet®

melamine
     n : a white crystalline organic base; used mainly in making
         melamine resins [syn: {cyanuramide}]