The word(s) "oceanos" appears 4 time(s) in 4 verse(s) in Quran in Portuguese (Prof. Samir El-Hayek) translation.

(1) Ainda que todas as árvores da terra se convertessem em cálamos e o oceano (em tinta), e lhes fossem somados mais seteoceanos, isso não exauriria as palavras de Deus, porque Deus é Poderoso, Prudentíssimo.

(سورة لقمان, Luqman, Chapter #31, Verse #27)
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(2) E entre os Seus sinais está o dos navios que se elevam como montanhas nos oceanos.

(سورة الشورى, Ash-Shura, Chapter #42, Verse #32)
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(3) E pelos oceanos transbordantes.

(سورة الطور, At-Tur, Chapter #52, Verse #6)
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(4) Quando os oceanos forem despejados,

(سورة الإنفطار, Al-Infitaar, Chapter #82, Verse #3)
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