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1. (n.) americium
a transuranic element, one of the products of high-energy helium bombardment of uranium and plutonium.
Etymology: (1946; Americ(a)+-ium2)
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| Definition of 'americium' |
Princeton's WordNet |
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1. (noun) americium, Am, atomic number 95
a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
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| Definition of 'americium' |
U.S. National Library of Medicine |
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1. americium
Americium. A completely man-made radioactive actinide with atomic symbol Am, atomic number 95, and atomic weight 243. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.
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Definitions of americium 
