quintilhão

Portuguese
Portuguese numbers (edit)
[a], [b] ←  1012 [a], [b], [c] ←  1015 1018 1021  → [a], [b] 1024  → [a], [b], [c]
    Cardinal (Brazil): um quintilhão
    Cardinal (everywhere but Brazil): um trilião
    Ordinal (Brazil): quintilionésimo
    Ordinal (Portugal): trilionésimo
    Fractional (Brazil): quintilionésimo, um quintilhão avos
    Fractional (Portugal): trilionésimo
    Fractional (everywhere but Brazil): um trilião avos
Portuguese Wikipedia article on 1018

Etymology

Borrowed from French quintillion.

Pronunciation
  • (Brazil) IPA(key): /kĩ.t͡ʃiˈʎɐ̃w̃/ [kĩ.t͡ʃiˈʎɐ̃ʊ̯̃]
  • (Portugal) IPA(key): /kĩ.tiˈʎɐ̃w̃/

  • Hyphenation: quin‧ti‧lhão

Noun

quintilhão m (plural quintilhões)

  1. (Brazil, cardinal number) quintillion (1018)
    Synonym: (Angola, Portugal) trilião
  2. (Portugal, informal, cardinal number) Synonym of quintilião (“1030”)

Usage notes
  • 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 1018 is expressed as mil triliões in African and European Portuguese, but as um trilhão in Brazilian Portuguese.[1]
  • The Angolan Government proscribes the use of long scale.[2]
  • In Portugal, the alternative um quintilhão (“1030”) is an informal spelling of the preferred and proscribed um trilião.[3]

References
  1. bilião e outros grandes números in FLiP - Dúvida Linguística
  2. Angola padroniza a escrita e a leitura dos grandes números in Ciberdúvidas da Língua Portuguesa
  3. “quintilhão” in Dicionário Priberam da Língua Portuguesa.
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