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5 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 bar·i·um /ˈbæriəm, ˈbɛr-/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 bar·i·um /ˈbærɪəm, ˈbɛr-/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Ba·ri·um n.  Chem. One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137.  Symbol, Ba. Its oxide called baryta.  [Rarely written barytum.]
 Note:Some of the compounds of this element are remarkable for their high specific gravity, as the sulphate, called heavy spar, and the like. The oxide was called barote, by Guyton de Morveau, which name was changed by Lavoisier to baryta, whence the name of the metal.

From: WordNet (r) 2.0

      n : a soft silvery metallic element of the alkali earth group;
          found in barite [syn: Ba, atomic number 56]

From: Elements database 20001107

 Symbol: Ba
 Atomic number: 56
 Atomic weight: 137.34
 Silvery-white reactive element, belonging to group 2 of the periodic
 table. Soluble barium compounds are extremely poisonous. Identified in
 1774 by Karl Scheele and extracted in 1808 by Humphry Davy.