Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An artificially produced radioactive element with atomic number 109 that has known isotopes with mass numbers ranging from 265 to 279. The isotope with the longest confirmed half-life (0.7 seconds) is Mt-268. cross-reference: Periodic Table.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
transuranic chemical element (symbol Mt) withatomic number 109.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a radioactive transuranic element
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[After Lise Meitner.]
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named for Lise Meitner
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Examples
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First, we learn about the brave physicist after whom meitnerium is named.
Archive 2008-09-01 Peggy 2008
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First, we learn about the brave physicist after whom meitnerium is named.
Women in Chemistry @ Chemical Heritage Foundation Peggy 2008
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An element discovered in 1982 has been named meitnerium to honor Lise Meitner (1878-1968), the Austrian-Swedish physicist and mathematician who discovered the element protactinium and made major contributions to the understanding of nuclear fission.
Elements 2009
oroboros commented on the word meitnerium
Mt.
December 16, 2007