billion

n. number equal to a thousand millions, 1 000 000 000 (in the USA and France); number equal to a million millions, 1 000 000 000 000 (in Britain)

Billion may mean:Numbers Either of two numbers (see long and short scales for more detail):1,000,000,000 (one thousand million; ; SI prefix giga) - increasingly common meaning in English-language usage1,000,000,000,000 (one million million; ; SI prefix tera) - increasingly rare meaning in English-language usage; standard meaning in many other languages
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Noun
1. 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
(synonym) one million million, 1000000000000
(hypernym) large integer
(classification) United Kingdom, UK, Great Britain, GB, Britain, United Kingdom of Great Britain and Northern Ireland
2. the number that is represented as a one followed by 9 zeros
(synonym) one thousand million, 1000000000
(hypernym) large integer
(hyponym) milliard
(classification) United States, United States of America, America, US, U.S., USA, U.S.A.
Adjective
1. denoting a quantity consisting of one thousand million items or units in the United States
(synonym) a billion
(similar) cardinal
(classification) United States, United States of America, America, US, U.S., USA, U.S.A.
2. denoting a quantity consisting of one million million items or units in Great Britain
(synonym) a billion
(similar) cardinal
(classification) United Kingdom, UK, Great Britain, GB, Britain, United Kingdom of Great Britain and Northern Ireland

n. trillion, number equaling one thousand billions, one million millions, one followed by 12 zeros

n. billion, trillion