An Etymological Dictionary of Astronomy and Astrophysics

A → WC Wolf-Rayet with a spectrum shows the following emission line characteristics:
C III 5696 Å stronger than C IV 5801-12 Å, C II 4267 Å absent, and O V 5572-98 Å weak or absent.

See also: W, from → Wolf-Rayet; C, from → carbon; → star.