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Definition of CALLISTO
: a nymph loved by Zeus, changed into a she-bear by Hera, and subsequently changed into the Great Bear constellation
Origin of CALLISTO
Latin, from Greek Kallistō
First Known Use: 14th century
In Greek mythology, a nymph and a hunting companion of Artemis. Though she vowed never to wed, she was seduced by Zeus, who turned her into a she-bear to conceal his infidelity from the jealous Hera. She was then killed by Artemis during a hunt. Other versions hold that it was Artemis or Hera, enraged at her unchastity, who turned her into a bear. After her death Zeus placed her in the heavens as the constellation Ursa Major (Great Bear).