Carthusian
noun
Car·thu·sian kär-ˈthü-zhən 
-ˈthyü-
: a member of an ascetic contemplative religious order founded by St. Bruno in 1084
Carthusian adjective
Word History
Etymology
Medieval Latin Cartusiensis, from Cartusia Chartreuse, motherhouse of the Carthusian order, near Grenoble, France
First Known Use
1526, in the meaning defined above