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caesium

Caesium is a 7 letter word which starts with the letter C and ends with the letter M for which we found 1 definitions.

Definition
(n.) 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 weight 132.6.

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