Billion
Pronunciation : Bil"lion
Part of Speech : n.
Etymology : [F. billion, arbitrarily formed fr. L. bis twice, in imitation of million a million. See Million.]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913