- Gr. & Rom. Myth. the immortal twin of Castor
- a giant, orange star, actually the brightest star in the constellation Gemini although it is considered the twin of Castor: magnitude, 1.1
Origin of PolluxClassical Latin earlier Polluces ; from Classical Greek Polydeukēs
- One of the Dioscuri.
- A double star in the constellation Gemini, approximately 33 light years from Earth and of roughly equal brightness with Castor.
Origin of PolluxLatin Pollūx, from Greek Poludeukēs.
- (mineralogy) A variety of petalite always found with castor.
Named from Greek mythology; see etymology at castor (“a mineral”).