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omission

noun [C or U]
 
 
/əʊˈmɪʃ.ən/ /əˈ-/ US  /oʊ-/

Definition

the act of not including something or someone that should have been included, or something or someone that has not been included when they should have been: Measures to control child employment are a glaring (= very obvious) omission from new legislation to protect children. There are some serious errors and omissions in the book. Many of the fans believe that the omission of Heacock from the team cost England the match.Excluding
(Definition of omission noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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