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deductive

[dih-duhk-tiv] /dɪˈdʌk tɪv/
adjective
1.
based on deduction from accepted premises, as in deductive argument; deductive reasoning.
Origin
1640-1650
1640-50; < Latin dēductīvus derivative. See deduct, -ive
Related forms
deductively, adverb
nondeductive, adjective
nondeductively, adverb
undeductive, adjective
undeductively, adverb
Synonyms
Deductive and inductive refer to two distinct logical processes. Deductive reasoning is a logical process in which a conclusion drawn from a set of premises contains no more information than the premises taken collectively. All dogs are animals; this is a dog; therefore, this is an animal: The truth of the conclusion is dependent only on the method. All men are apes; this is a man; therefore, this is an ape: The conclusion is logically true, although the premise is absurd. Inductive reasoning is a logical process in which a conclusion is proposed that contains more information than the observations or experience on which it is based. Every crow ever seen was black; all crows are black: The truth of the conclusion is verifiable only in terms of future experience and certainty is attainable only if all possible instances have been examined. In the example, there is no certainty that a white crow will not be found tomorrow, although past experience would make such an occurrence seem unlikely.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un deductive

deductive

/dɪˈdʌktɪv/
adjective
1.
of or relating to deduction: deductive reasoning
Derived Forms
deductively, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for un deductive

deductive

adj.

1640s, from Latin deductivus, from deduct-, past participle stem of deducere "to deduce" (see deduce). Related: Deductively.

Online Etymology Dictionary, © 2010 Douglas Harper
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