(ī′ō′; for 2, also ē′ō′)
- Gr. Myth. a maiden loved by Zeus and changed into a heifer by jealous Hera or, in some tales, by Zeus to protect her: she is watched by Argus and is driven to Egypt, where she regains human form
- the third largest satellite of Jupiter: discovered in 1610 by Galileo and found in 1979 to be volcanically active
L < Gr Iō
See Io in American Heritage Dictionary 4
- Greek Mythology A maiden who was loved by Zeus and transformed by Hera into a heifer.
- One of the four brightest satellites of Jupiter and the fifth in distance from the planet. It was first sighted by Galileo.
Origin: Latin Īō
Origin: , from Greek
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