Alkaline metal element

• Extremely abrasive music could be metal
• Very reactive metal
• Reactive metal element
• A soft silver-white ductile metallic element (liquid at normal temperatures)
• Fancy short musical with European element

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
caesium \caesium\, Caesium \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, ...

Wikipedia Word definitions in Wikipedia
Caesium or cesium is a chemical element with symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature ...

Wiktionary Word definitions in Wiktionary
alt. A metallic chemical element (''symbol'' Cs) with an atomic number of 55. n. A metallic chemical element (''symbol'' Cs) with an atomic number of 55.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ It had a caesium 137 concentration of only 4 becquerels per kilogram. ▪ The caesium chloride lattice is thus said to have 8:8 coordination. ▪ The caesium chloride structure, for example, consists of a cubic structure of cations ...