fermium
[fur-mee-uh m]
- a transuranic element. Symbol: Fm; atomic number: 100.
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Origin of fermium
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
fermium
- a transuranic element artificially produced by neutron bombardment of plutonium. Symbol: Fm; atomic no: 100; half-life of most stable isotope, 257 Fm: 80 days (approx.)
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Word Origin
C20: named after Enrico Fermi
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for fermium
Fermium
n.
discovered in the debris of a 1952 U.S. nuclear test in the Pacific, named 1955 for Italian-born U.S. physicist Enrico Fermi (1901-1954).
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Online Etymology Dictionary, © 2010 Douglas Harper
fermium
(fûr′mē-əm, fĕr′-)- A synthetic radioactive metallic element whose most stable isotope is Fm 257 with a half-life of approximately 100 days. Atomic number 100.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
fermium
[fûr′mē-əm]
- A synthetic, radioactive metallic element of the actinide series that is produced from plutonium or uranium. Its most stable isotope is Fm 257 with a half-life of approximately 100 days. Atomic number 100. See Periodic Table.
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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.