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curium Definition

☆ cu·rium (kyo̵̅o̅′rē əm, kyo̵or′ē-)

noun

an extremely radioactive, metallic chemical element, one of the actinides, generally produced by neutron bombardment of plutonium or americium: symbol, Cm; at. no., 96

Etymology: ModL, after Pierre & Marie Curie + -ium: so named (1946) by Glenn T(heodore) Seaborg, its discoverer, by analogy with the corresponding rare earth gadolinium