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square of opposition

noun, Logic.
1.
a diagrammatic representation of the opposition of categorical propositions.
Origin of square of opposition
1860-1865
First recorded in 1860-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for square of opposition

square of opposition

noun
1.
See opposition (sense 10b)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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