based on deduction from accepted premises, as in deductive argument; deductive reasoning.

1640–50; < Latin dēductīvus derivative. See deduct, -ive

deductively, adverb
nondeductive, adjective
nondeductively, adverb
undeductive, adjective
undeductively, adverb

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. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
deductive (dɪˈdʌktɪv)
of or relating to deduction: deductive reasoning

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1650s, from L. deductivus, from deduct-, pp. stem of deducere "to deduce" (see deduce).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Given that medicine generally uses deductive reasoning to arrive at diagnoses
  in complex cases.
Deductive reasoning applies general principles to predict specific results.
What the expert poker player brings to the game is deductive reasoning, which
  allows him to evaluate this complexity.
The deductive reasoning required is equally sharp, if not sharper.
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