quatrilhão

Portuguese

Portuguese numbers ^(edit)

[a], [b] ←  1,000,000,000 (109)	[a], [b] ←  1012	1015	1018  → [a], [b]	1021  → [a], [b]
Cardinal (Brazil): um quatrilhão, um quadrilhão     Cardinal (everywhere but Brazil): mil biliões     Ordinal (Brazil): quatrilionésimo, quadrilionésimo     Ordinal (Portugal): milésimo bilionésimo, milésimo de bilionésimo     Fractional (Brazil): quatrilionésimo, quadrilionésimo, um quatrilhão avos, um quadrilhão avos     Fractional (Portugal): milésimo bilionésimo, milésimo de bilionésimo     Fractional (everywhere but Brazil): mil biliões avos
Portuguese Wikipedia article on 1015

Alternative forms

• quadrilhão
• quatrilião, quadrilião (especially in Portugal)

Etymology

Borrowed from French quatrillion.

Pronunciation

• (Brazil) IPA^(key): /kwa.tɾiˈʎɐ̃w̃/ [kwa.tɾiˈʎɐ̃ʊ̯̃]

• (Portugal) IPA^(key): /kwɐ.tɾiˈʎɐ̃w̃/

• Hyphenation: qua‧tri‧lhão

Noun

quatrilhão m (plural quatrilhões)

1. (Brazil, cardinal number) quadrillion (10¹⁵)

   Synonym: (Portugal) mil biliões

2. (Portugal, informal, cardinal number) septillion (10²⁴)

   Synonyms: (Portugal, preferred in most circumstances) quatrilião, quadrilião; (Brazil) septilhão

Usage notes

• Brazil (along with the US and UK) uses the short scale large-number naming system, while Portugal uses the long scale. The number 10¹⁵ (one quadrillion) is expressed in Brazilian Portuguese as um quatrilhão or um quadrilhão but in European and African Portuguese as mil biliões.
• In Portugal, um quatrilhão means "one septillion" (10²⁴) but is considered an informal spelling; quatrilião or quadrilião is preferred in most circumstances.