diammo-, diammonio-Chem. See di-2 2, ammo-, ammonio-. 1873Watts Fownes' Chem. (ed. 11) 424 The Diammonio-platinous and Tetrammonio-platinic Compounds.Ibid., These tetrammonio-platinous compounds may also be regarded as salts of diammoplatoso-diammonium.