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caesium

cae·sium

UK/ˈsiːzi.əm/ uncommon

noun

1.

a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal

Synonyms

Origin

From Latin caesius (“sky-blue”), in reference to the radiation spectra, + -ium.

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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.