Pronunciation: (ku-lis'tō), [key]
1. Also,Kallisto. Class. Myth.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. Astron.a large natural satellite of the planet Jupiter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.