ULTRAMARINE

n. U'lt-ra3-ma2r-en'. From ultra, beyond, and mare, the sea. A blue pigment formerly obtained from lapis lazuli and now artificially prepared by roasting a mixture of fine white clay, sodium carbonate, sulphur, and charcoal or rosin. [B, 8 (a, 27).] Cobalt u. See The nard's BLUE. Yellow u. See BARIUM chromate. [s. 669]