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truth-function

[trooth-fuhngk-shuh n] /ˈtruθˌfʌŋk ʃən/
noun, Logic.
1.
a statement so constructed from other statements that its truth-value depends on the truth-values of the other statements rather than on their meanings.
Related forms
truth-functional, adjective
truth-functionally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for truth function

truth-function

noun (logic)
1.
a function that determines the truth-value of a complex sentence solely in terms of the truth-values of the component sentences without reference to their meaning
2.
a complex sentence whose truth-value is so determined, such as a negation or conjunction
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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