an·ti·mo·ny ( n t -m  n )n. Symbol Sb A metallic element having four allotropic forms, the most common of which is a hard, extremely brittle, lustrous, silver-white, crystalline material. It is used in a wide variety of alloys, especially with lead in battery plates, and in the manufacture of flame-proofing compounds, paint, semiconductor devices, and ceramic products. Atomic number 51; atomic weight 121.76; melting point 630.5°C; boiling point 1,380°C; specific gravity 6.691; valence 3, 5. See Table at element. [Middle English antimonie, from Medieval Latin antim nium, perhaps from Arabic al-'i mid : al-, the + 'imid, antimony (perhaps from Greek stimmi).] |
antimony [ˈæntɪmənɪ]
n
(Chemistry / Elements & Compounds) a toxic metallic element that exists in two allotropic forms and occurs principally in stibnite. The stable form is a brittle silvery-white crystalline metal that is added to alloys to increase their strength and hardness and is used in semiconductors. Symbol: Sb; atomic no.: 51; atomic wt.: 121.757; valency: 0, -3, +3, or +5; relative density: 6.691; melting pt.: 630.76°C; boiling pt.: 1587°C
[from Medieval Latin antimōnium, of uncertain origin]
| antimony (nt-mn) Symbol Sb A metalloid element having many forms, the most common of which is a hard, very brittle, shiny, blue-white crystal. It is used in a wide variety of alloys, especially with lead in car batteries, and in the manufacture of flameproofing compounds. Atomic number 51; atomic weight 121.76; melting point 630.5°C (1,167°F); boiling point 1,380°C (2,516°F); specific gravity 6.691; valence 3, 5. See Periodic Table. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  antimony - a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnitemetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. stibnite - a soft grey mineral; the chief ore of antimony |
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