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Definitions of billion
  1. noun
    the number that is represented as a one followed by 9 zeros
    type of:
  2. noun
    a very large indefinite number (usually hyperbole)
  3. noun
    the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen
    type of:
  4. adjective
    denoting a quantity consisting of one million million items or units in Great Britain

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  5. adjective
    denoting a quantity consisting of one thousand million items or units in the United States

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