Meaning of Caesium

English: Caesium
Bangla: সিজিয়াম, সীজিয়াম
Hindi: सीज़ियम
Type: Unknown / অজানা / अज्ञात

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Bangla Academy Dictionary:

Definition: 1


Definition: 2

a rare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; atomic weight: 132.905; atomic number: 55; specific gravity: 1.9 at 20°C; melts at 28.5°C.

Definition: 3

a ductile silvery-white element of the alkali metal group that is the most electropositive metal. It occurs in pollucite and lepidolite and is used in photocells. The radioisotope caesium-137, with a half-life of 30.2 years, is used in radiotherapy. Symbol: Cs; atomic no: 55; atomic wt: 132.90543; valency: 1; relative density: 1.873; melting pt: 28.39±0.01°C; boiling pt: 671°C

Definition: 4

the usual US spelling of caesium