How do you spell Cistercian

Available Definitions:
1) n. - A monk of the prolific branch of the Benedictine Order, established in 1098 at Citeaux, in France, by Robert, abbot of Molesme. For two hundred years the Cistercians followed the rule of St. Benedict in all its rigor.
2) a. - Of or pertaining to the Cistercians.