Definition of conditional noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//kənˈdɪʃənl//
    ; NAmE NAmE//kənˈdɪʃənl//
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  1. 1[countable] a sentence or clause that begins with if or unless and expresses a condition
  2. 2the conditional [singular] the form of a verb that expresses a conditional action, for example should in If I should die… the present/past/perfect conditional the first/second/third conditional
  3. Word Originlate Middle English: from Old French condicionel or late Latin condicionalis, from condicio(n-) ‘agreement’, from condicere ‘agree upon’, from con- ‘with’ + dicere ‘say’.
See the Oxford Advanced American Dictionary entry: conditional