Csious

C"si*ous

(?), a. [L. caesius bluish gray.] (Nat. Hist.) Of the color of lavender; pale blue with a slight mixture of gray. Lindley.
[1913 Webster]

caesium

,

C"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 number 55. Atomic weight 132.6.
Syn. -- cesium, Cs
[1913 Webster]

 

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Tue 11th December 2018