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excluded middle

British

noun

logic the principle that every proposition is either true or false, so that there is no third truth-value and no statements lack truth-value

"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

Example Sentences

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Law of the excluded middle a logical law that states that for any statement, either that statement or its negation is true.

From Textbooks • Jun. 15, 2022

Define the laws of noncontradiction and the excluded middle.

From Textbooks • Jun. 15, 2022

The law of the excluded middle states that for any statement, either that statement is true, or its negation is true.

From Textbooks • Jun. 15, 2022

The law of the excluded middle is related to the law of noncontradiction.

From Textbooks • Jun. 15, 2022

Well, I can't say anything else—I get to the end of all the logic about non-resistance, and there, like an excluded middle, stands the huge spectre of man as he is and always will be.

From This Side of Paradise by Fitzgerald, F. Scott (Francis Scott)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023