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Dictionary definition for: Billion

1. (n) 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

2. (s) denoting a quantity consisting of one thousand million items or units in the United States

3. (n) the number that is represented as a one followed by 9 zeros

4. (s) denoting a quantity consisting of one million million items or units in Great Britain

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