iˈridico-
combining form of iridic, entering into adjectives naming double salts of iridium and another element, e.g. iridico-ammonic, iridico-potassic, iridico-sodic, as iridico-ammonic sulphate or iridammonium sulphate, N2H6Ir{pp}SO4.
iˈridico-
combining form of iridic, entering into adjectives naming double salts of iridium and another element, e.g. iridico-ammonic, iridico-potassic, iridico-sodic, as iridico-ammonic sulphate or iridammonium sulphate, N2H6Ir{pp}SO4.
Oxford English Dictionary