efeito borboleta

Portuguese

Etymology

Compound of efeito (“effect”) +‎ borboleta (“butterfly”). Allusion that if a butterfly flapped its wings somewhere on Earth, this movement could change a system on the other side of the planet; popularly known for the allegory that the flapping of a butterfly's wings in Brazil could cause a tornado in Texas.

Pronunciation
 
  • (Brazil) IPA(key): /eˈfej.tu boʁ.boˈle.tɐ/ [eˈfeɪ̯.tu boɦ.boˈle.tɐ]
    • (São Paulo) IPA(key): /eˈfej.tu boɾ.boˈle.tɐ/ [eˈfeɪ̯.tu boɾ.boˈle.tɐ]
    • (Rio de Janeiro) IPA(key): /eˈfej.tu boʁ.boˈle.tɐ/ [eˈfeɪ̯.tu boʁ.boˈle.tɐ]
    • (Southern Brazil) IPA(key): /eˈfej.to boɻ.boˈle.ta/ [eˈfeɪ̯.to boɻ.boˈle.ta]
 
  • (Portugal) IPA(key): /iˈfɐj.tu buɾ.buˈle.tɐ/ [iˈfɐj.tu βuɾ.βuˈle.tɐ]
    • (Northern Portugal) IPA(key): /iˈfej.tu buɾ.buˈle.tɐ/ [iˈfej.tu βuɾ.βuˈle.tɐ]
    • (Central Portugal) IPA(key): /iˈfej.tu buɾ.buˈle.tɐ/ [iˈfej.tu βuɾ.βuˈle.tɐ]
    • (Southern Portugal) IPA(key): /iˈfe.tu buɾ.buˈle.tɐ/ [iˈfe.tu βuɾ.βuˈle.tɐ]

Noun

efeito borboleta m (usually uncountable, plural efeitos borboleta)

  1. butterfly effect (technical notion of sensitive dependence on initial conditions in chaos theory)
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