BILLION — СИНОНІМІЯ
billion the number that is represented as a one followed by 9 zeros
WordNet
billion the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen
WordNet
billion denoting a quantity consisting of one thousand million items or units in the United States
WordNet
billion denoting a quantity consisting of one million million items or units in Great Britain
WordNet