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Definition of deficiency noun from the Oxford Advanced American Dictionary

     

    deficiency

     noun
    noun
    NAmE//dɪˈfɪʃnsi//
     
    (pl. deficiencies)
     
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  1. 1[uncountable, countable] deficiency (in/of something) the state of not having, or not having enough of, something that is essential synonym shortage Vitamin deficiency in the diet can cause illness. a deficiency of Vitamin B
  2. 2[countable] deficiency (in/of something) a fault or a weakness in something or someone that makes it or them less successful deficiencies in the computer system
See the Oxford Advanced Learner's Dictionary entry: deficiency

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