( a. )
Of, pertaining to, or designating, those compounds of nickel in which, as contrasted with the nickelic compounds, the metal has a lower valence; as, nickelous oxide.
( a. )
Of, pertaining to, or designating, those compounds of nickel in which, as contrasted with the nickelic compounds, the metal has a lower valence; as, nickelous oxide.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012