Fer"ric (?), a. [L. ferrum iron: cf. F. ferrique. See Ferrous.]
Pertaining to, derived from, or containing iron. Specifically Chem., denoting those compounds in which iron has a higher valence than in the ferrous compounds; as, ferric oxide; ferric acid.
Ferric acid Chem., an acid, H2FeO4, which is not known in the free state, but forms definite salts, analogous to the chromates and sulphates. -- Ferric oxide Chem., sesquioxide of iron, Fe2O3; hematite. See Hematite.
© Webster 1913.