1. Also Kallisto. Classical Mythology. 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. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for callisto

Historical Examples of callisto

  • We happened to be but a million miles off Callisto and picked up their message.

    The Space Rover

    Edwin K. Sloat

  • There was a crowd awaiting his ship at the Callisto Spaceport.

    Medal of Honor

    Dallas McCord Reynolds

  • He ran into her, finally, after he'd been on Callisto for nearly eight months.

    Medal of Honor

    Dallas McCord Reynolds

  • The answer to that was—Negu Mah would not let her leave Callisto.

    The Indulgence of Negu Mah

    Robert Andrew Arthur

  • And the same shares are listed on the Callisto market as on the New York boards?


    Clifford Donald Simak

British Dictionary definitions for callisto


  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


  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 kmSee also Galilean satellite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for callisto


fourth moon of Jupiter; in classical mythology a nymph, mother of Arcas by Zeus, turned to a bear by Hera, from Greek kallistos, superlative of kalos "beautiful." Feminized as proper name Callista.

Online Etymology Dictionary, © 2010 Douglas Harper

callisto in Science


  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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.