Al·bi·gen·ses 
(ăl′bə-jĕnsēz′)
(ăl′bə-jĕnsēz′)pl.n.
The members of a Catharist religious sect of southern France in the 12th and 13th centuries, exterminated by the Inquisition for heresy.
[Medieval Latin Albigēnsēs, pl. of Albigēnsis, inhabitant of Albiga, Albi, a town of southern France where the sect was dominant.]
Al′bi·gensian (-shən, -sē-ən) adj. & n.
Al′bi·gensian·ism n.