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. |
bismuth [ˈbɪzməθ]
n
(Chemistry / Elements & Compounds) 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
[from New Latin bisemūtum, from German Wismut, of unknown origin]
bismuthal [ˈbɪzməθəl] adj
| bismuth (bzmth) Symbol Bi 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. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | bismuth - a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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