a transuranic element artificially produced from californium. Symbol: Lr; atomic no: 103; half-life of most stable isotope, 256Lr: 35 seconds; valency: 3
Word origin
C20: named after Ernest Orlando Lawrence (1901–58), US physicist
lawrencium in American English
(lɔˈrɛnsiəm)
US
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
Word origin
ModL: so named after E. O. Lawrence (see Lawrence2 (sense 2)), who invented the cyclotron + -ium