The Collaborative International Dictionary
Manganic
Manganic \Man`gan"ic\, a. [Cf. F. manganique.] (Chem.) Of, pertaining to resembling, or containing, manganese; specif., designating compounds in which manganese has a higher valence as contrasted with manganous compounds. Cf. Manganous.
Wiktionary
manganic
a. (context chemistry English) Containing manganese in its higher oxidation states.