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berkelium

[ber-kee-lee-uh m]
noun Chemistry.
  1. a transuranic element. Symbol: Bk; atomic number: 97; atomic weight: 249 (?).

Origin of berkelium

1945–50; named after Berkeley, California, where it was discovered; see -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for berkelium

berkelium

noun
  1. a metallic transuranic element produced by bombardment of americium. Symbol: Bk; atomic no: 97; half-life of most stable isotope, 247 Bk: 1400 years; valency: 3 or 4; relative density: 14 (est)

Word Origin for berkelium

C20: named after Berkeley 1, where it was discovered
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
berkelium in Medicine

berkelium

[bər-kē′lē-əm, bûrk′lē-əm]
n. Symbol Bk
  1. A synthetic radioactive element. Its most stable isotope, Bk 247, has a half-life of 1,380 years. Atomic number 97.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
berkelium in Science

berkelium

[bər-kē′lē-əm, bûrk′lē-əm]
Bk
  1. A synthetic, radioactive metallic element of the actinide series that is produced from americium, curium, or plutonium. Its most stable isotope has a half-life of about 1,400 years. Atomic number 97; melting point 986°C; valence 3, 4. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.