a colorless, fuming liquid, SiCl 4 , used chiefly for making smoke screens and various derivatives of silicon.
noun, Chemistry. 1. a colorless, fuming gas, SiF 4 , used chiefly in the manufacture of fluosilicic acid.
noun 1. the area in northern California, southwest of San Francisco in the Santa Clara valley region, where many of the high-technology design and manufacturing companies in the semiconductor industry are concentrated. Silicon Valley noun 1. an industrial strip in W California, extending S of San Francisco, in which the US information technology industry is […]
silicoproteinosis sil·i·co·pro·tein·o·sis (sĭl’ĭ-kō-prō’tē-nō’sĭs, -tē-ə-nō’-) n. An acute, usually fatal pulmonary disorder, similar to pulmonary alveolar proteinosis, resulting from exposure to high concentrations of silica dust.
silicosiderosis sil·i·co·sid·er·o·sis (sĭl’ĭ-kō-sĭd’ə-rō’sĭs) n. See siderosilicosis.