Mid 19th century; earliest use found in Robert Mayne (1808–1868). From pallad- + -ous, after post-classical Latin palladosus. Compare French palladeux.
Definition of palladous in US English:
palladous
adjective
Chemistry
Of or containing palladium in the bivalent state.
Origin
Mid 19th century; earliest use found in Robert Mayne (1808–1868). From pallad- + -ous, after post-classical Latin palladosus. Compare French palladeux.