bis·muth (b z m th)n. Symbol Bi A white, crystalline, brittle, highly diamagnetic metallic element used in alloys to form sharp castings for objects sensitive to high temperatures and in various 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 Table at element. [Obsolete German Bismuth; see kweit- in Indo-European roots.] bis muth·al adj. |
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| Adj. | 1. | bismuthal - of or relating to bismuth |
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