An Etymological Dictionary of Astronomy and Astrophysics

An oxygen-rich → Wolf-Rayet star whose spectrum shows the following emission line characteristics:
No O IV 3400 Å, strong O VI 3811-34 Å, O V 5572-98 Å about or stronger than C IV 5801-12 Å, no C III 5696 Å.

See also: W, from → Wolf-Rayet; O, from → oxygen; → star.