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Meaning of billion

bil•lion

Pronunciation: (bil'yun), [key]
— n., pl. adj. -lions, -lion,
—n.
  1. a cardinal number represented in the U.S. by 1 followed by 9 zeros, and in Great Britain by 1 followed by 12 zeros.
  2. a very large number: I've told you so billions of times.
—adj.
  1. equal in number to a billion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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