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1. Greek Mythology A nymph, beloved of Zeus and hated by Hera. Hera changed her into a bear, and Zeus then placed her in the sky as the constellation Ursa Major.
2. One of the four brightest satellites of Jupiter. Originally sighted by Galileo, it is the third largest satellite in the solar system.

[Latin, from Greek Kallistō, perhaps from kallistos, superlative of kalos, beautiful.]


(Classical Myth & Legend) 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


(Celestial Objects) 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


(kəˈlɪs toʊ)

1. a nymph changed into a bear by Hera as punishment for a love affair with Zeus, and then transformed into the constellation Ursa Major.
2. a large moon of the planet Jupiter.
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Noun1.Callisto - the second largest of Jupiter's satellites
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References in classic literature ?
The story goes that he is Arcas the son of Callisto and Zeus, and he lived in the country about Lycaeum.
The monitoring and notification capabilities built into Callisto are designed for the ease of operation that utilities will want for all of their day-to-day activities.
Washington, January 25 (ANI): Scientists at the Southwest Research Institute, US, have determined that differences in the number and speed of cometary impacts onto Jupiter's large moons Ganymede and Callisto some 3.
The trial, designed to enroll 40 patients, presently has 29 patients on study, and Callisto anticipates achieving the total enrollment of 40 patients in the third quarter of 2007.
Jacob, CEO and chief scientific officer of Callisto.
Even so, Callisto was applied to more than 500,000 acres of corn in a span of two to three weeks.
The sharpest images ever taken of Jupiter's icy moon Callisto show features never seen before on the remote body--icy, knoblike spires that show slow but steady signs of erosion.
PASADENA - After years of garnering less attention than its sexier Jovian sisters, the crater-covered moon Callisto is getting closer attention than ever this week from NASA.
29, 2013 /PRNewswire/ -- Elster Solutions today announces the introduction of Callisto (TM), a new Grid Performance System that transforms how utilities optimize their Advanced Metering Infrastructure (AMI) systems, which play a key role in Smart Grid deployments.
Up until now, Callisto has not had the financial wherewithal to take this drug into the clinic.
Now it was time for the newly formed company and its partner agencies to introduce Callisto to the U.