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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.
 
1910 - Black's Law Dictionary (2nd edition)
By Henry Campbell Black
 
1985 - The Free On-line Dictionary of Computing
By Denis Howe

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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