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Prussian blue.

See Saundersblue.

A kind of color prepared from calcined lapis lazuli; ultramarine; also, a blue prepared from carbonate of copper. [Written also sanders-blue.]

A very light blue.

Having the blue color of the sky; azure; as, a sky-blue stone. Wordsworth.

Deep blue, like smalt.

Of inflexible honesty and fidelity; -- a term derived from the true, or Coventry, blue, formerly celebrated for its unchanging color. See True blue, under Blue.

The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian.

always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all cont…

A genus of plants, one species of which (A. Mexicanum) has lavender-blue flowers in dense clusters.

kin of a milky hue, with hair of the same color, and eyes with deep red pupil and pink or blue iris. The term is also used of the lower animals, as white mice, elephants, etc.; and of plants in a whitish condition from the absence of chlorophyll. Amer. Cyc.

s with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue. Fixed alkalies, potash and soda. -- Vegetable alkalies. Same as Alkaloids. -- Volatile alkali, ammonia, so called in distinction from the fixed alkalies.

of different shades. It is much used as a jeweler's stone. Oriental amethyst, the violet-blue variety of transparent crystallized corundum or sapphire.

g or producing two colors, as substances which in the color test may change red litmus to blue and blue litmus to red.

various organs of the body, produced by the deposit of an albuminous substance, giving a blue color with iodine and sulphuric acid; -- called also waxy or lardaceous degeneration.

Two-edged instead of round; -- said of certain flattened stems, as those of blue grass, and rarely also of leaves.

The blue coloring matter of certain flowers. Same as Cyanin.

A name of the great blue and yellow macaw (Ara ararauna), native of South America.

A body of persons organized for the advancement of a cause; as, the Blue Ribbon Army.

spect resembling, an arrow; swift; darting; piercing. "His arrowy tongue." Cowper. By the blue rushing of the arrowy Rhone. Byron. With arrowy vitalities, vivacities, and ingenuities. Carlyle.