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os·mi·um AHD[ŏzʹmē-əm] D.J.[ˈɒzmiːəm]K.K.[ˈɑzmiəm]n.Symbol Os （名词）符号 Os - A bluish-white, hard metallic element, found in small amounts in osmiridium, nickel, and platinum ores. It is used as a platinum hardener and in making pen points, phonograph needles, and instrument pivots. Atomic number 76; atomic weight 190.2; melting point 3,000°C; boiling point 5,000°C; specific gravity 22.57; valence 2, 3, 4, 8. See table at element 锇：一种白色带点蓝色的硬金属元素，在铱锇矿、镍及铂的矿石中有少量储藏。用作铂的硬化剂并用于制作笔尖、唱片针和仪表枢轴。原子序数为76；原子量为190.2；熔点为3,000°C；沸点为5,000°C；比重为22.57；化合价为2，3，4，8 参见 element
- From Greek osmē [smell (from the strong odor of osmium tetroxide)] 源自 希腊语 osmē [气味（由四氧化锇的强烈气味得名）]
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