Definition of Orion in English:

Orion

proper noun

  • 1Greek Mythology
    A giant and hunter who was changed into a constellation at his death.

  • 2Astronomy
    A conspicuous constellation (the Hunter), said to represent a hunter holding a club and shield. It lies on the celestial equator and contains many bright stars, including Rigel, Betelgeuse, and a line of three that form Orion's Belt.

    1. 2.1Used with preceding letter or numeral to designate a star in this constellation.
      ‘the multiple star Theta Orionis’

Origin

Via Latin from Greek.

Pronunciation:

Orion

/əˈrʌɪən/