- a white, crystalline, slightly water-soluble solid, C3N3(NH2)3, used chiefly in organic synthesis and in the manufacture of resins, especially melamine resins.
- any of the melamine resins.
- a colourless crystalline compound used in making synthetic resins; 2,4,6-triamino-1,3,5-triazine. Formula: C 3 H 6 N 6
- melamine resin or a material made from this resin