breakthrough - definition and synonyms

 
noun [countable] 

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/ˈbreɪkθruː/
singularbreakthrough
pluralbreakthroughs
  1. 1
    a discovery or achievement that comes after a lot of hard work

    Detectives are still waiting for a breakthrough in their investigations.

    Scientists predict a major breakthrough within six months.

  2. 2
    a time when you begin to be successful at something

    The breakthrough came in the 20th minute with a header from Barnes.