Manganous
Pronunciation : Man"ga*nous
Part of Speech : a.
Definition : Defn: Of, pertaining to, designating, those compounds of manganese in which the element has a lower valence as contrasted with manganic compounds; as, manganous oxide. Manganous acid, a hypothetical compound analogous to sulphurous acid, and forming the so-called manganites.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913