From Medieval Latin Carthusianus, see French cartusien, from the Chartreuse, Latin Cartusia, where the order was founded.
Carthusian (plural Carthusians)
- A member of a Christian contemplative order of monks founded by Bruno of Cologne (St Bruno) in 1084.
- A pupil of Charterhouse School (founded in a Carthusian monastery)
- Of, or relating to this order.