billion

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Pronunciation[change]

Determiner[change]

Determiner
billion

  1. (number) (ordinal billionth) The number 1,000,000,000 (or 1,000,000,000,000 in old British usage).
    In 2006, China had about 1.3 billion people.

Noun[change]

Singular
billion

Plural
billions

  1. (countable) The number 1,000,000,000 (or 1,000,000,000,000 in old British usage).
    Billions of dollars have been spent on the war in Iraq.