 cesium |
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| 1. | [ noun ] (chemistry,geology) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal | |
| Synonyms: | Cs atomic_number_55 caesium | |
| Related terms: | metallic_element pollucite cesium_137 pollucite | |
| Similar spelling: |
cecum caesium Cessna |
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