BOB半岛

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        bil·lion

        billion

         
        pronunciation:
        bIl yn
        parts of speech:
        noun, adjective
        features:
        Word Explorer, Word Parts
        part of speech: noun
        definition 1: the number that is equal to one thousand times one million; 1,000,000,000.
        definition 2: a very large number that is not named exactly.
        There are billions of ants living in the rain forest.
         
        part of speech: adjective
        definition 1: being one billion in number.
        The government spent over a billion dollars on education.
        definition 2: being a very large number that is not named exactly.
        We could see at least a billion stars.
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