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.

Manganic acid, an acid, H2MnO4, formed from manganese, analogous to sulphuric acid.

Source: Webster's Revised Unabridged Dictionary (1913)