AskDefine | Define billion

Dictionary Definition

billion adj
1 denoting a quantity consisting of one thousand million items or units in the United States [syn: a billion]
2 denoting a quantity consisting of one million million items or units in Great Britain [syn: a billion]


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 [syn: one million million, 1000000000000]
2 the number that is represented as a one followed by 9 zeros [syn: one thousand million, 1000000000]

User Contributed Dictionary

see Billion



From the prefix bi-, meaning two + -illion (from million); i.e. a million million.


  • /ˈbɪljən/, /"bIlj@n/
  • Rhymes with: -ɪljən
  • Hyphenation: bil·lion

Cardinal number

  1. A milliard, a thousand million: 1 followed by nine zeros, 109.
  2. A million million: a 1 followed by twelve zeros, 1012.
  3. In the context of "colloquial|plural": A very large number.
    There were billions of people at the concert

Derived terms


a thousand million; 1,000,000,000; 109; a milliard
a million million; 1,000,000,000,000; 1012



  • /bi.ljɔ̃/
  • SAMPA: /bi.ljO~/

Cardinal number


Extensive Definition

Billion may refer to:
In numbers:
In other usage
billion in Danish: Billion
billion in German: Billion
billion in Spanish: Billón
billion in Esperanto: Biliono
billion in French: Billion
billion in Galician: Billón
billion in Italian: Bilione
billion in Hebrew: שמות מספרים
billion in Latin: Billio
billion in Hungarian: Billió
billion in Dutch: Miljard
billion in Polish: Bilion
billion in Portuguese: Bilhão
billion in Russian: Биллион
billion in Slovenian: Bilijon
billion in Finnish: Biljoona
billion in Swedish: Biljon
billion in Tamil: பில்லியன்
billion in Ukrainian: Більйон

Synonyms, Antonyms and Related Words

a billion, a crore, a lakh, a million, a myriad, a nonillion, a quadrillion, a thousand, a zillion, astronomical number, googol, googolplex, infinitude, infinity, jillion, large number, milliard, trillion, zillion
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