Definition of centaur
1 or less commonly Centaur : any of a race of creatures fabled to be half human and half horse and to live in the mountains of Thessaly
2 Centaur, astronomy : any of a class of asteroids with elliptical orbits that typically lie between the orbits of Jupiter and Neptune The Centaurs are distinguished dynamically as a group of objects whose orbits cross those of the Jovian planets and whose perihelions lie outside the orbit of Jupiter.— Robert H. Brown et al.
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