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1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.
 
1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer
 
1899 - The american dictionary of the english language.
By Daniel Lyons
 
1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison

Word of the day

alkalinity

  • pH values above 7 The quality which constitutes an alkali; alkaline property. state of being alkaline; the degree to which a substance exhibits alkaline properties or an reaction.
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