What is Centaurian?

Centaurian definition and meaning on Dictionary terms:
Classical Mythology. one of a race of monsters having the head, trunk, and arms of a man, and the body and legs of a horse.
(initial capital letter) Astronomy. the constellation Centaurus.
a skillful horseman or horsewoman.
(initial capital letter) Rocketry. a U.S. upper stage, with a restartable liquid-propellant engine, used with an Atlas or Titan booster to launch satellites and probes.


reference: https://www.dictionary.com/browse/centaurian