Io

Pronunciation: /ˈaɪəʊ/

The English word “Io” has 2 meanings listed here.

proper noun

A moon of Jupiter, known for its volcanic activity, peppered with about 400 active volcanoes.
85 Io, a main belt asteroid; the asteroid shares its name with the Jovian moon

Borrowed from Latin Io, from Ancient Greek Ἰώ (Iṓ).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.