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Portuguese numbers (edit)
 ←  1,000,000 (106)  ←  100,000,000 (108) 1,000,000,000 (109) 1012  → [a], [b] 1015  → [a], [b], [c]
    Cardinal (Brazil): um bilhão
    Cardinal (everywhere but Brazil): mil milhões
    Ordinal (Brazil): bilionésimo
    Ordinal (Portugal): milésimo milionésimo, milésimo de milionésimo
    Fractional (Brazil): bilionésimo, um bilhão avos
    Fractional (Portugal): milésimo milionésimo, milésimo de milionésimo
    Fractional (everywhere but Brazil): mil milhões avos


Borrowed from French billion.


  • Hyphenation: bi‧lhão


bilhão m (plural bilhões)

  1. (Brazil, cardinal number) billion (109)
    Synonym: (Angola, Portugal) mil milhões
  2. (Portugal, informal, cardinal number) Synonym of bilião (1012)

Usage notes[edit]

  • Portuguese-speaking countries follow the traditional long scale, with the exception of Brazil which adopted the short scale used in the UK and US. The number 109 is expressed as mil milhões (literally one thousand million) in African and European Portuguese, but as um bilhão in Brazilian Portuguese.[1]
  • The Angolan Government proscribes the use of long scale.[2]
  • In Portugal, the alternative um bilhão (one trillion, 1012) is an informal spelling of the preferred and proscribed um bilião.[3]


For quotations using this term, see Citations:bilhão.