Pegasus Definition

A winged horse which springs from the body of Medusa at her death.
Webster's New World
A large N constellation between Andromeda and Pisces.
Webster's New World

(Greek mythology) A winged horse fabled to have sprung from the blood of Medusa when she was slain. He is noted for causing, with a blow of his hoof, Hippocrene, the inspiring fountain of the Muses, to spring from Mount Helicon. Bellerophon tamed and rode upon Pegasus when he defeated the Chimaera.


(astronomy) An autumn constellation of the northern sky, near the vernal equinoctial point, said to resemble the mythical horse. Its three brightest stars, with the brightest star of Andromeda, form the square of Pegasus. It contains the stars Markab and Algenib.


Other Word Forms of Pegasus


pegasi, pegasuses

Origin of Pegasus

  • From Latin, from Ancient Greek Πήγασος (Pegasos), traditionally associated with πηγή (pege, “spring, fountain, fountain fed by a spring"), especially used to denote springs of Ocean, where Perseus killed Medusa, from whose blood Pegasus sprang. Some have dismissed this as folk etymology and suggest a pre-Greek origin because of the -ασος suffix.

    From Wiktionary

  • Middle English from Latin Pēgasus from Greek Pēgasos

    From American Heritage Dictionary of the English Language, 5th Edition

  • From the mythical Pegasus.

    From Wiktionary

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