Definition of Io in English:

Io

Syllabification: I·o
Pronunciation: /ˈī-ō, ˈē-ō
 
/
  • 1 Greek Mythology A priestess of Hera who was loved by Zeus. Trying to protect her from the jealousy of Hera, Zeus turned Io into a heifer. Hera sent a gadfly to torture the heifer, which then fled across the world and finally reached Egypt, where Zeus turned her back into human form.
  • 2 Astronomy One of the Galilean moons of Jupiter, the fifth closest satellite to the planet. It is actively volcanic, colored red and yellow with sulfur compounds, and has a diameter of 2,526 miles (3,630 km).

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Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea