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PORTUGUESE · A WORD WITH POSSIBILITIES

cio.

heat (condition where a mammal is aroused sexually or where it is especially fertile)

3 characters1 syllables approx.Português language

Meaning & usage

noun/ˈsi.u/Brazil/ˈsiw/Brazil[ˈsiʊ̯]Brazil/ˈsi.u/Portugal
  1. heat (condition where a mammal is aroused sexually or where it is especially fertile)

    masculine · uncountable
    A gata está no cio.
Where this word comes from

From Old Galician-Portuguese cio, ceo, from Latin zēlus, from Ancient Greek ζῆλος (zêlos). Doublet of zelo, a borrowing.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.