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Webster 1913 Edition

Adj.

[L.

ferrum

iron: cf. F.

ferrique

. See

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

Adj.

Pertaining to or extracted from iron. Ferric acid is the acid of iron saturated with oxygen.