cesium

Plural: cesiums

Noun

• A soft, silvery-gold metallic element, known for its extreme reactivity.
• a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
• Alternative form of caesium.

Examples

• The sudden play of CESIUM completely changed the atomic structure of the Words With Friends board.

Synonyms

atomic number 55, caesium, Cs