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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1899 - The american dictionary of the english language.
By Daniel Lyons
 
1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.
 
1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.

Word of the day

Nuclear Fissions

  • Nuclear reaction in which the nucleus of heavy atom such as uranium plutonium is split into two approximately equal parts by a neutron, charged particle, or photon.
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