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cu·ri·um  audio  (kyr-m) KEY 

NOUN:
Symbol Cm
A silvery metallic synthetic radioactive transuranic element. Its longest lived isotope is Cm 247 with a half-life of 16.4 million years. Atomic number 96; melting point (estimated) 1,350°C; valence 3. See Table at element.
ETYMOLOGY:
After Curie, Marie, and Curie, Pierre


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