Definition of Cepheus in US English:

Cepheus

proper noun

Astronomy
  • 1A constellation near the north celestial pole.

    1. 1.1as genitive Cephei /ˈsēfēˌī/ Used with preceding letter or numeral to designate a star in the constellation Cepheus.
      ‘the star Beta Cephei’

Origin

From the name of a king of Ethiopia, the husband of Cassiopeia.

Pronunciation

Cepheus

/ˈsēfēəs/