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



    BrE BrE//ˈflætnəs//
    ; NAmE NAmE//ˈflætnəs//
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  1. 1the quality of being level or smooth the immense flatness of the plain an instrument for measuring floor flatness
  2. 2the fact of being dull and lacking in interest, enthusiasm or emotion feelings of flatness and disappointment
  3. 3the fact of business not being very successful because very little is being sold a sustained state of flatness in the economy