|a brittle pinkish-white crystalline metallic element having low thermal and electrical conductivity, which expands on cooling. It is widely used in alloys, esp low-melting alloys in fire safety devices; its compounds are used in medicines. Symbol: Bi; atomic no: 83; atomic wt: 208.98037; valency: 3 or 5; relative density: 9.747; melting pt: 271.4°C; boiling pt: 1564±5°C|
|[C17: from New Latin bisemūtum, from German Wismut, of unknown origin]|
bismuth bis·muth (bĭz'məth)
A highly diamagnetic metallic element used in various low-melting alloys in castings, solders, and fire-safety devices. Atomic number 83; atomic weight 208.980; melting point 271.4°C; boiling point 1,560°C; specific gravity 9.747; valence 3, 5.
|bismuth (bĭz'məth) Pronunciation Key
A brittle, pinkish-white, crystalline metallic element that occurs in nature as a free metal and in various ores. Bismuth is the most strongly diamagnetic element and has the highest atomic number of all stable elements. It is used to make low-melting alloys for fire-safety devices. Atomic number 83; atomic weight 208.98; melting point 271.3°C; boiling point 1,560°C; specific gravity 9.747; valence 3, 5. See Periodic Table.