Chem. [f. as prec. + -INE4.] A white powder, 2CyH2N.CyHO, produced by boiling melam with dilute sulphuric acid or with caustic potash; an amic base of cyanuric acid.
1846. Penny Cycl., 1st Supp. 336/2. Ammeline is composed of very fine silky needles.
1863. Watts, Dict. Chem., II. 287. Ammeline is a weak base, forming crystalline salts, which are partially decomposed by water.