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lawrencium

(lô ren′sē əm)

☆

noun

a radioactive, metallic chemical element, the last member of the actinide series: originally produced by bombarding californium with boron nuclei: symbol, Lr; at. no., 103

Origin: ModL: so named after E. O. Lawrence (see Ernest O(rlando) Lawrence), who invented the cyclotron + -ium

See lawrencium in American Heritage Dictionary 4

noun Symbol Lr

A short-lived, radioactive synthetic transuranic element produced from californium and whose most stable isotope has a mass number of 262 with a half-life of 3.6 hours; atomic number 103. See Table at element.

Origin:

Origin: After Ernest Orlando Lawrence

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