IO

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does Io mean? 

• IO (noun)
  The noun IO has 2 senses:

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

2. the closest of Jupiter's moons; has active volcanoes

  Familiarity information: IO used as a noun is rare.

 Dictionary entry details 

• IO (noun)

Sense 1

Meaning:

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

Classified under:

Nouns denoting people

Instance hypernyms:

maid; maiden (an unmarried girl (especially a virgin))

Domain category:

Greek mythology (the mythology of the ancient Greeks)

Sense 2

Meaning:

The closest of Jupiter's moons; has active volcanoes

Classified under:

Nouns denoting natural objects (not man-made)

Instance hypernyms:

Galilean; Galilean satellite (one of the four satellites of Jupiter that were discovered by Galileo)

 Context examples 

Because of Io's low gravity, large eruptions produce an umbrella of debris that rises high into space.

(A Hellacious Two Weeks on Jupiter's Moon Io, NASA)

This includes not only the charged particles within the solar wind but also the particles thrown into space by its orbiting moon Io, known for its numerous and large volcanoes.

(Hubble Captures Vivid Auroras in Jupiter’s Atmosphere, NASA)

Io is the most volcanically active object in the solar system.

(New Research Reveals Fluctuating Atmosphere of Jupiter’s Volcanic Moon, NASA)

The Juno team will continue to evaluate data collected on the Dec. 16 flyby, as well as JIRAM data that will be collected during future (and even closer) flybys of Io.

(NASA Juno data indicate another possible volcano on Jupiter moon Io, NASA)

Io as the most volcanically active object in the Solar System.

(Massive Lava Waves Detected on Solar System’s Most Volcanically Active Object, The Titi Tudorancea Bulletin)

The color image shows atmospheric features on Jupiter, including the famous Great Red Spot, and three of the massive planet's four largest moons — Io, Europa and Ganymede, from left to right in the image.

(Juno Spacecraft Sends First In-orbit View, NASA)

The eruptions on Io are likely similar to those that shaped the surfaces of inner solar system planets such as Earth and Venus in their youth.

(A Hellacious Two Weeks on Jupiter's Moon Io, NASA)

The new study documents atmospheric changes on Io as the giant planet casts its shadow over the moon’s surface during daily eclipses.

(New Research Reveals Fluctuating Atmosphere of Jupiter’s Volcanic Moon, NASA)

As Europa eclipsed Io, LBTO captured the incoming infrared light.

(Massive Lava Waves Detected on Solar System’s Most Volcanically Active Object, The Titi Tudorancea Bulletin)

The new Io hotspot JIRAM picked up is about 200 miles (300 kilometers) from the nearest previously mapped hotspot, said Alessandro Mura, a Juno co-investigator from the National Institute for Astrophysics in Rome.

(NASA Juno data indicate another possible volcano on Jupiter moon Io, NASA)