| Pronunciation: | | 'seezeeum
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 WordNet Dictionary |
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| | Definition: | |
[n] a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal |
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CAESIUM is a 7 letter word that starts with C. |
| | Synonyms: | | atomic number 55, cesium, Cs |
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| | See Also: | | cesium 137, metal, metallic element, pollucite |
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| Webster's 1913 Dictionary |
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| | Definition: | | \C[ae]"si*um\, n. [NL., from L. caesius bluish gray.]
(Chem.)
A rare alkaline metal found in mineral water; -- so called
from the two characteristic blue lines in its spectrum. It
was the first element discovered by spectrum analysis, and is
the most strongly basic and electro-positive substance known.
Symbol Cs. Atomic weight 132.6.
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