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Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.

A white crystalline sugar, metameric with glucose, obtained from the coloring matter of saffron. [Written also crokose.]

A mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with perfect basal cleavage; -- so named from the Swedish mineralogist Cronstedt.

ved from, a plant of the genus Croton, or from croton oil. Crotonic acid (Chem.), a white crystalline organic acid, C3H5.CO2H, of the ethylene, or acrylic acid series. It was so named because formerly supposed to exist in croton oil. Also, any acid metameric with crotonic acid proper.

The cry of the cock. See Crow, v. i., 1.

Crystallized cawk, in which the crystals are small.

To cry like a crane. [Obs.] "The crane crunketh." Withals (1608).

r; as, 4x4=16, and 16x4=64, the cube of 4. Cube ore (Min.), pharmacosiderite. It commonly crystallizes in cubes of a green color. -- Cube root. (Math.), the number or quantity which, multiplied into itself, and then into the product, produces the given cube; thus, 3 is the cube root of 27, for 3x3x3 = 27. -- Cube spa…

Isometric or monometric; as, cubic cleavage. See Crystallization. Cubic equation, an equation in which the highest power of the unknown quantity is a cube. -- Cubic foot, a volume equivalent to a cubical solid which measures a foot in each of its dimensions. -- Cubic number, a number produced by multiplying a number…

erived from, cumin, or from oil of caraway; as, cuminic acid. Cuminic acid (Chem.), white crystalline substance, C3H7.C6H4.CO2H, obtained from oil of caraway.

has an eye to the cupboard. "A cupboard love is seldom true." Poor Robin. [Colloq.] -- To cry cupboard, to call for food; to express hunger. [Colloq.] "My stomach cries cupboard." W. Irving.

ide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals.

(Crystalloq.) A solid related to a tetrahedron, and contained under twelve equal triangles.

aloid extracted from the curare poison and from the Strychnos toxifera. It is obtained in crystalline colorless salts.

The coloring principle of turmeric, or curcuma root, extracted as an orange yellow crystalline substance, C14H14O4, with a green fluorescence.

A salt of cyanic acid. Ammonium cyanate (Chem.), a remarkable white crystalline substance, NH4.O.CN, which passes, on standing, to the organic compound, urea, CO.(NH)2.

A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium. [Written also kyanite.]

or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide.

A white crystalline substance, C3H7NSO2, containing sulphur, occuring as a constituent of certain rare urinary calculi, and occasionally found as a sediment in urine.

A white crystalline, sugary substance obtained from an African caotchouc.