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English definition of “ad hoc”

ad hoc

adjective [before noun]     /ˌædˈhɒk/ US  /-ˈhɑːk/
made or happening only for a particular purpose or need, not planned before it happens: an ad hoc committee/meeting We deal with problems on an ad hoc basis (= as they happen).Not expected or planned
(Definition of ad hoc adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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