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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
 
1919 - The Concise Standard Dictionary of the English Language
By James Champlin Fernald

Word of the day

ammonium chlorid

  • Sal ammoniac, NH4CI, found native volcanic regions small quantities sea water and formed artificially by the direct combination of ammonia hydrochloric acid gas. Used in bronchitis.
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