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1. (n.) barium
a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite.
Etymology: (1800–10; bar (ytes ) + -ium2)
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| Definition of 'barium' |
Princeton's WordNet |
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1. (noun) barium, Ba, atomic number 56
a soft silvery metallic element of the alkali earth group; found in barite
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| Definition of 'barium' |
Webster Dictionary |
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1. (noun) barium
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
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| Definition of 'barium' |
U.S. National Library of Medicine |
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1. barium
An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.
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Definitions of barium 
