Definition of deductive in English:



  • Characterized by or based on the inference of particular instances from a general law.

    ‘deductive reasoning’
    ‘I used my deductive powers’
    • ‘According to Goodman, we formulate rules of deductive logic by taking our cue from intuitively valid deductive inferences.’
    • ‘These are not specific geometrical properties but rather general assumptions which allow mathematics to proceed as a deductive science.’
    • ‘Although empiricists also used deductive reasoning, they put a greater emphasis on the inductive method championed by fellow British countryman Francis Bacon.’
    • ‘Still, Adams's result vindicates deductive reasoning from uncertain premises, provided that they are not too uncertain, and there are not too many of them.’
    • ‘That is a valid deductive argument against materialism, and its premises are hard to deny.’
    • ‘Our physical science is not a deductive system, but a series of generalizations based in observation of finite modes.’
    • ‘I think he is attacking systematic philosophies and the idea of deductive logic.’
    • ‘All that we require is some general and less than deductive understanding of how economic properties and relations might be underlain by physical ones.’
    • ‘The deductive and inductive procedures, applied to the sentences, produce the inferences.’
    • ‘Neither deductive nor inductive reasoning can account for the way in which we immediately see that such principles are true.’
    • ‘He saw mathematics as providing the most fundamental of all ideas and the deductive reasoning of mathematics was seen as the ideal way of achieving knowledge.’
    • ‘The distinction between deductive and inductive validity goes back to Aristotle.’
    • ‘If inductive inference can teach us something new, in opposition to deductive inference, this is because it is not a tautology.’
    • ‘Mathematics in its widest signification is the development of all types of formal, necessary, deductive reasoning.’
    • ‘These insights are said to be made a priori and Austrian reasoning is thus deductive, not inductive, or empirical.’
    • ‘Aristotle was not primarily a mathematician but made important contributions by systematising deductive logic.’
    • ‘The deductive inferences, however, are all valid.’
    • ‘This knowledge is a balanced assessment, since it is based on both deductive or objective and inductive or empathic reasoning.’
    • ‘First, modern mathematical methods were to be represented in formal deductive systems.’
    • ‘The key thing about is that it is not, or at least not obviously, an instance of some general deductive or probabilistic principle.’
    reasoned, well reasoned, rational, sound, cogent, well thought out, valid
    View synonyms


Mid 17th century: from medieval Latin deductivus, from deduct- ‘deduced’, from the verb deducere (see deduce).