|
|
|
noun Caesium n. (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. Synonyms: cesium, Cs
Collaborative International Dictionary of English 0.48
|
|
|
