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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe
 
1871 - The Cabinet Dictionary of the English Language

Word of the day

international pitch

  • the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C
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