Potassium ferrocyanide(Chem.), yellow prussiate of potash; a tough, yellow, crystalline salt, K4(CN)6Fe, the starting point in the manufacture of almost all cyanogen compounds, and the basis of the ferric ferrocyanate, prussian blue. It is obtained by strongly heating together potash, scrap iron, and animal matter containing nitrogen, as horn, leather, blood, etc., in iron pots.

(Fer`ro*prus"si*ate) ( or or see Prussiate, 277), n. [Ferro- + prussiate.] (Chem.) A ferrocyanate; a ferocyanide. [R.]

(Fer`ro*prus"sic) a. [Ferro- + prussic.] (Chem.) Ferrocyanic.

(Fer*ro"so-) (Chem.) See Ferro- .

(Fer"ro*type) n. [L. ferrum iron + -type.] A photographic picture taken on an iron plate by a collodion process; — familiarly called tintype.

(Fer"rous) a. [Cf. F. ferreux. See Ferreous.] (Chem.) Pertaining to, or derived from, iron; — especially used of compounds of iron in which the iron has its lower valence; as, ferrous sulphate.

(Fer*ru"gi*na`ted) a. [See Ferrugo.] Having the color or properties of the rust of iron.

(Fer`ru*gin"e*ous) a. Ferruginous. [R.]

(Fer*ru"gi*nous) a. [L. ferruginus, ferrugineus, fr. ferrugo, - ginis, iron rust: cf. F. ferrugineux. See Ferrugo.]

1. Partaking of iron; containing particles of iron. Boyle.

2. Resembling iron rust in appearance or color; brownish red, or yellowish red.

(||Fer*ru"go) n. [L., iron rust, fr. ferrum iron.] A disease of plants caused by fungi, commonly called the rust, from its resemblance to iron rust in color.

(Fer"rule) n. [Formerly verrel, F. virole, fr. L. viriola little bracelet, dim. of viriae, pl., bracelets; prob. akin to viere to twist, weave, and E. withe. The spelling with f is due to confusion with L. ferrum iron.]

1. A ring or cap of metal put round a cane, tool, handle, or other similar object, to strengthen it, or prevent splitting and wearing.

2. (Steam Boilers) A bushing for expanding the end of a flue to fasten it tightly in the tube plate, or for partly filling up its mouth.

(Fer*ru"mi*nate) v. t. [L. ferruminatus, p. p. of ferruminare to cement, solder, fr. ferrumen cement, fr. ferrum iron.] To solder or unite, as metals. [R.] Coleridge.

(Fer*ru`mi*na"tion) n. [L. ferruminatio: cf. F. ferrumination.] The soldering or uniting of metals. [R.] Coleridge.

(Fer"ry) v. t. [imp. & p. p. Ferried ; p. pr. & vb. n. Ferrying.] [OE. ferien to convey, AS. ferian, from faran to go; akin to Icel. ferja to ferry, Goth. farjan to sail. See Fare.] To carry or transport over a river, strait, or other narrow water, in a boat.

(Fer"ry), v. i. To pass over water in a boat or by a ferry.

They ferry over this Lethean sound
Both to and fro.

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

  By PanEris using Melati.

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