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1945. From the name of the Greek god Prometheus, who stole the fire from Mount Olympus and brought it down to mankind + -ium.
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promethium (uncountable)
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promethium
Chemical element | |
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Pm | |
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promethium n (uncountable)
promēthium n (genitive promēthiī); second declension
Second-declension noun (neuter).
Case | Singular | Plural |
---|---|---|
Nominative | promēthium | promēthia |
Genitive | promēthiī | promēthiōrum |
Dative | promēthiō | promēthiīs |
Accusative | promēthium | promēthia |
Ablative | promēthiō | promēthiīs |
Vocative | promēthium | promēthia |
promethium n