billion - definition and synonyms

 
 
number 

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/ˈbɪljən/
  1. 1
    the number 1,000,000,000
  2. 2

    billions

    or

    a billion

    a very large number or amount of people or things
    billion of:

    We’ve told them billions of times.

  3. 3
    British old-fashioned a trillion