Definition of buildup noun from the Oxford Advanced American Dictionary

     

    buildup

     noun
    noun
    NAmE//ˈbɪldʌp//
     
     
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  1. 1[singular, uncountable] an increase in the amount of something over a period of time a steady buildup of traffic in the evenings carbon dioxide buildup in the atmosphere
  2. 2 [countable, usually singular] buildup (to something) the time before an important event, when people are preparing for it the buildup to the president's visit the buildup to her wedding
  3. 3[countable, usually singular] a very positive and enthusiastic description of something that is going to happen, that is intended to make people excited about it The media has given the show a huge buildup.