Callisto

American  

[kuh-lis-toh] / kəˈlɪs toʊ /

noun

1. Classical Mythology. Also Kallisto a nymph attendant on Artemis, punished for a love affair with Zeus by being changed into a bear and then transformed into stars as the constellation Ursa Major.

2. Astronomy. a large natural satellite of the planet Jupiter.

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Callisto ¹ British  

/ kəˈlɪstəʊ /

noun

1. Greek myth a nymph who attracted the love of Zeus and was changed into a bear by Hera. Zeus then set her in the sky as the constellation Ursa Major

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Callisto ² British  

/ kəˈlɪstəʊ /

noun

1. the second largest (but faintest) of the four Galilean satellites of Jupiter, discovered in 1610 by Galileo. Approximate diameter: 4800 km; orbital radius: 1 883 000 km See also Galilean satellite

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Callisto Scientific  

/ kə-lĭs′tō /

1. One of the four brightest satellites of Jupiter and the eighth in distance from the planet. Originally sighted by Galileo, it is the largest planetary satellite.

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Example Sentences

Europa, Ganymede and Callisto are thought to harbor subsurface oceans beneath their icy crusts.

From Science Daily • Mar. 1, 2026

Those moons are Callisto, Europa and Ganymede, the largest moon in the solar system.

From Seattle Times • May 12, 2023

Clipper’s data should provide a strong comparison for JUICE’s view of Europa’s ice that would be sufficient to extrapolate and distinguish against whatever the European spacecraft sees at Ganymede and, potentially, Callisto.

From Scientific American • Apr. 24, 2023

Juice — short for Jupiter Icy Moons Explorer — will spend three years buzzing Callisto, Europa and Ganymede.

From Washington Times • Apr. 14, 2023

The outer two, Ganymede and Callisto, have a much lower density, halfway between rock and ice.

From "Cosmos" by Carl Sagan