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.

(Fer`ri*cy"a*nate) n. [Ferri- + cyanate.] (Chem.) A salt of ferricyanic acid; a ferricyanide.

(Fer`ri*cy*an"ic) a. [Ferri- + cyanic.] (Chem.) Pertaining to, or derived from, a ferricyanide.

Ferricyanic acid(Chem.), a brown crystalline substance, H6(CN)12Fe2, obtained from potassium ferricyanide, and regarded as the type of the ferricyanides; — called also hydro-ferricyanic acid, hydrogen ferricyanide, etc.

(Fer`ri*cy"a*nide) n. [Ferri- + cyanide.] (Chem.) One of a complex series of double cyanides of ferric iron and some other base.

Potassium ferricyanide(Chem.), red prussiate of potash; a dark, red, crystalline salt, K6(CN)12Fe2, consisting of the double cyanide of potassium and ferric iron. From it is derived the ferrous ferricyanate, Turnbull's blue.

(Fer"ri*er) n. A ferryman. Calthrop.

(Fer*rif"er*ous) a. [L. ferrum iron + -ferous: cf. F. ferrifère.] Producing or yielding iron.

(Fer`ri*prus"si*ate) n. [Ferri- + prussiate.] (Chem.) A ferricyanate; a ferricyanide. [R.]

(Fer`ri*prus"sic) a. [Ferri- + prussic.] (Chem.) Ferricyanic. [R.]

(Fer"ro-) (Chem.) A prefix, or combining form, indicating ferrous iron as an ingredient; as, ferrocyanide.

(Fer`ro*cal"cite) n. [Ferro- + calcite.] Limestone containing a large percentage of iron carbonate, and hence turning brown on exposure.

(Fer`ro*cy"a*nate) n. [Ferro- + cyanate: cf. F. ferrocyanate.] (Chem.) A salt of ferrocyanic acid; a ferrocyanide.

(Fer`ro*cy*an"ic) a. [Ferro- + cyanic: cf. F. ferrocyanique.] (Chem.) Pertaining to, derived from, or designating, a ferrocyanide.

ferrocyanic acid(Chem.), a white crystalline substance, H4(CN)6Fe, of strong acid properties, obtained from potassium ferrocyanide, and regarded as the type of the ferrocyanides; — called also hydro-ferrocyanic acid, hydrogen ferrocyanide. etc.

Ferreter to Fess

(Fer"ret*er) n. One who ferrets. Johnson.

(Fer"ret-eye`) n. (Zoöl.) The spur-winged goose; — so called from the red circle around the eyes.

(Fer*ret"to) n. [It. ferretto di Spagna, dim. of ferro iron, fr. L. ferrum.] Copper sulphide, used to color glass. Hebert.

(Fer"ri-) (Chem.) A combining form indicating ferric iron as an ingredient; as, ferricyanide.

(Fer"ri*age) n. [From Ferry.] The price or fare to be paid for passage at a ferry.

(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.

  By PanEris using Melati.

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