An (imagined) inhabitant of Alpha Centauri. Cf. centaurian, n.

With capital initial. An (imagined) inhabitant of the constellation Centaurus or of a star system within it, esp. Alpha Centauri. Cf. sense A. 2.

In works of Science Fiction: a being of superior intelligence, physique, etc.; a superman. Hence used gen. among fans of this type of literature.

Chiefly Science Fiction. An intelligent artificial being typically made of metal and resembling in some way a human or other animal.

Originally and chiefly Science Fiction. A robot, frequently a humanoid one; an android.

Originally Science Fiction. A robot.

A robot resembling a woman in appearance. Also in extended use: a woman characterized as a robot.