Williamson's blue

Williamson's blue
Prussian Prus"sian, a. [From Prussia, the country: cf. F. prussien.] Of or pertaining to Prussia. -- n. A native or inhabitant of Prussia. [1913 Webster]

{Prussian blue} (Chem.), any one of several complex double cyanides of ferrous and ferric iron; specifically, a dark blue amorphous substance having a coppery luster, obtained by adding a solution of potassium ferrocyanide (yellow prussiate of potash) to a ferric salt. It is used in dyeing, in ink, etc. Called also {Williamson's blue}, {insoluble Prussian blue}, {Berlin blue}, etc.

{Prussian carp} (Zo["o]l.) See {Gibel}.

{Prussian green}. (Chem.) Same as {Berlin green}, under {Berlin}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • insoluble Prussian blue — Prussian Prus sian, a. [From Prussia, the country: cf. F. prussien.] Of or pertaining to Prussia. n. A native or inhabitant of Prussia. [1913 Webster] {Prussian blue} (Chem.), any one of several complex double cyanides of ferrous and ferric iron; …   The Collaborative International Dictionary of English

  • Prussian blue — Prussian Prus sian, a. [From Prussia, the country: cf. F. prussien.] Of or pertaining to Prussia. n. A native or inhabitant of Prussia. [1913 Webster] {Prussian blue} (Chem.), any one of several complex double cyanides of ferrous and ferric iron; …   The Collaborative International Dictionary of English

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