bar·i·um (bâr  - m, b r-)n. Symbol Ba A soft, silvery-white alkaline-earth metal, used to deoxidize copper and in various alloys. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See Table at element. bar ic (- k) adj. |
barium [ˈbɛərɪəm]
n
(Chemistry / Elements & Compounds) a soft silvery-white metallic element of the alkaline earth group. It is used in bearing alloys and compounds are used as pigments. Symbol: Ba; atomic no.: 56; atomic wt.: 137.327; valency: 2; relative density: 3.5; melting pt.: 729°C; boiling pt.: 1805°C
[from bar(yta) + -ium]
| barium (bâr-m) Symbol Ba A soft, silvery-white metallic element of the alkaline-earth group. It occurs only in combination with other elements, especially in barite. Barium compounds are used in x-raying the digestive system and in making fireworks and white pigments. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See Periodic Table. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  barium - a soft silvery metallic element of the alkali earth group; found in baritemetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. baryta - any of several compounds of barium barite, barytes, heavy spar, barium sulphate - a white or colorless mineral (BaSO4); the main source of barium |
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