manganous

Relating to or containing manganese, especially with valence 2.

Containing manganese: in chemistry, specifically applied to compounds in which each manganese atom is regarded as having a maximum quantivalence of two. Compare manganic.

Of, pertaining to, designating, those compounds of manganese in which the element has a lower valence as contrasted with manganic compounds.

a hypothetical compound analogous to sulphurous acid, and forming the so-called manganites.

Containing manganese in its +2 oxidation state.