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