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billion definition

bil·lion (bil′yən)

noun

  1. a thousand millions (1,000,000,000)
  2. Brit. trillion (a million millions)

Etymology: Fr < bi-, bi- + (mi)llion

adjective

amounting to one billion in number

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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