molybdous
/məˈlɪbdəs/Chemistry. Now rare
adjective
Of or containing molybdenum in one of its lower valencies; also in extended use. molybdous acid noun Obsolete. molybdenum dioxide.
Origin
Late 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From molybd- + -ous. Compare French molybdeux.