pallad-Chem.,|ˈpæləd|used as combining form of palladium, in names of certain compounds, as ˈpalladaˌmine, palladaˈmmonium, pallaˈddiamine: see quots.1859Fownes Man.Chem. 329 Palladamine, NPdH3.O, may be obtained from the chloride by oxide of silver... Müller also obtained another compound..to which he gives the name of palladdiamine; it contains N2PdH6.1866–77Watts Dict.Chem. IV. 329 Hugo Müller regards..the yellow [compound] as chloride of palladammonium, N2H6Pd{pp}.Cl2. The yellow compound..yields the oxide of palladammonium, or palladamine, N2H6Pd{pp}O.