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natural deduction

British

noun

a system of formal logic that has no axioms but permits the assumption of premises of an argument. Such a system uses sequents to record which assumptions are operative at any stage Compare axiomatic

"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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

What seemed like a natural deduction in the West -- behaving like a group must mean a suppression of the self -- was a leap in logic in Japan.

From Salon • Jun. 18, 2011

A natural deduction from this was that one person or few persons must own many times 40 shares to bring the average up.

From Time Magazine Archive

The natural deduction from this is that the main settlement of the Antiphoner of the Mass fell within the same period.

From St. Gregory and the Gregorian Music by Wyatt, E. G. P.

We expect to hear so, as the natural deduction from John’s premises.

From Memories of Bethany by Macduff, John R. (John Ross)

The natural deduction was therefore that she had been taken in some other direction.

From Tarzan the Terrible by Burroughs, Edgar Rice

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