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Io
1[ ahy-oh, ee-oh ]
noun
- Classical Mythology. a woman who, being loved by Zeus, was transformed into a white heifer and was, at the wish of Hera, first guarded by Argus and later pursued through the world by a gadfly until she reached Egypt, where she resumed her true shape: identified by the Egyptians with Isis.
- Astronomy. a large volcanically active moon of the planet Jupiter.
Io
2[ ahy-oh, ee-oh ]
noun
Io
3io
4[ ee-oh ]
noun
- a small, solitary hawk, Buteo solitarius, having two plumage phases and breeding only on the Island of Hawaii, where it is a rare species and the only indigenous bird of prey: classified as near threatened.
Io.
5abbreviation for
- Iowa.
I/O
6- Computers. input/output.
I.O.
7abbreviation for
- indirect object.
I/O
1abbreviation for
- input/output
io
2the internet domain name for
- British Indian Ocean Territory
Io
3/ ˈ²¹ÉªÉ™ÊŠ /
noun
- Greek myth a maiden loved by Zeus and turned into a white heifer by either Zeus or Hera
Io
4/ ˈ²¹ÉªÉ™ÊŠ /
noun
- the innermost of the four Galilean satellites of Jupiter, displaying intense volcanic activity. Diameter: 3640 km; orbital radius: 422Â 000 km
Io
5the chemical symbol for
- ionium
Io
/ ī′Å,ŧ′Š/
- One of the four brightest satellites of Jupiter and the fifth in distance from the planet. It was first sighted by Galileo.
- See Note at moon
51³Ô¹Ï History and Origins
Origin of Io1
Example Sentences
The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body in our solar system.
The spacecraft produced the first high-resolution images of the four planets, the rings of Jupiter, Uranus and Neptune, lightning on Jupiter and lava lakes that revealed active volcanoes on Jupiter’s moon Io.
New images of Jupiter's volcano-studded moon Io, taken by the Large Binocular Telescope on Mount Graham in Arizona, offer the highest resolution of Io ever achieved with an Earth-based instrument.
But although the planet is known to be smothered in volcanoes, an opaque atmosphere has prevented anyone from seeing an eruption the way spacecraft have spotted them on Io, the hypervolcanic moon of Jupiter.
Critics in the West have praised the film “Io Capitano†— nominated for the 2024 Academy Award for best international feature film — noting its visceral yet tender look at migration to Europe from Africa.
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