The Collaborative International Dictionary
Ferric \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.
Wiktionary
n. (context chemistry English) The chemical compound Fe2O3, iron oxide where iron has a valence of +3. IUPAC has deprecated this term in favor of iron(III) oxide.
WordNet
n. a red oxide of iron
Usage examples of "ferric oxide".
But he was able to vary the color, using chromic oxide for red and ferric oxide for yellow and titanium for blue.
It was limpid but rather hard, and contained ferric oxide and tiny traces of sulphide.
Also, gum, resin, chlorophyl, fixed oil, lignin, salts of lime and potassium, with ferric oxide.
A reddish pigment called ferric oxide was washed over the stucco to hold off erosion.
Rising, he started to brush it from his pants-only to discover that his pants, and his shirt, had been replaced by a loose white robe that had been embellished with swirling patterns of tinted ferric oxide.