Definitions of Io

n (Greek mythology) a maiden seduced by Zeus; when Hera was about to discover them together Zeus turned her into a white heifer

Example of:
maid, maiden
an unmarried girl (especially a virgin)

n the closest of Jupiter's moons; has active volcanoes

Example of:
Galilean, Galilean satellite
one of the four satellites of Jupiter that were discovered by Galileo

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