The Collaborative International Dictionary
Nickelous
Nickelous \Nick"el*ous\, a. (Chem.)
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.
--Frankland.
Wiktionary
nickelous
a. 1 Containing nickel. 2 (context chemistry English) Containing bivalent nickel.
Usage examples of "nickelous".
Among these activators are magnesium, manganous zinc, ferrous, cobaltous, and nickelous ions, as well as others.