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Polychromate :: Polychromate (n.) A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence..

Bi- :: Bi- () In the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably..

Chromate :: Chromate (n.) A salt of chromic acid.

Vauquelinite :: Vauquelinite (n.) Chromate of copper and lead, of various shades of green..

Chromatype :: Chromatype (n.) A colored photographic picture taken upon paper made sensitive with potassium bichromate or some other salt of chromium.

Chromium :: Chromium (n.) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome..

Bichromatize :: Bichromatize (v. t.) To combine or treat with a bichromate, esp. with bichromate of potassium; as, bichromatized gelatine..

Bichromate :: Bichromate (n.) A salt containing two parts of chromic acid to one of the other ingredients; as, potassium bichromate; -- called also dichromate..

Polychromate :: Polychromate (n.) A salt of a polychromic acid.

Crocoite :: Crocoite (n.) Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.

Dichromate :: Dichromate (n.) A salt of chromic acid containing two equivalents of the acid radical to one of the base; -- called also bichromate.

Melanochroite :: Melanochroite (n.) A mineral of a red, or brownish or yellowish red color. It is a chromate of lead; -- called also phoenicocroite..

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