1One of the largest and most prominent northern constellations (the Great Bear). The seven brightest stars form a familiar formation variously called the Plough, Big Dipper, or Charles's Wain, and include the Pointers.
- 1.1Used with preceding letter or numeral to designate a star in this constellation.‘the star Delta Ursae Majoris’
- 1.1Used with preceding letter or numeral to designate a star in this constellation.
Latin, from the story in Greek mythology that the nymph Callisto was turned into a bear and placed as a constellation in the heavens by Zeus.