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Bil"lion (?), n. [F. billion, arbitrarily formed fr. L. bis twice, in imitation of million a million. See Million.]

According to the French and American method of numeration, a thousand millions, or 1,000,000,000; according to the English method, a million millions, or 1,000,000,000,000. See Numeration.

 

© Webster 1913.