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English definition of “necessitate”

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verb [T] uk   /nəˈses.ɪ.teɪt/ formal us  
to cause something to be needed, or to make something necessary: Reduction in government spending will necessitate further cuts in public services. [+ -ing verb] An important meeting necessitates my being in Boston on Friday.
(Definition of necessitate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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