The Collaborative International Dictionary of English v.0.48:
Prelature \Prel"a*ture\ (?; 135), Prelatureship \Prel"a*ture*ship\, n. [F. pr['e]lature, or LL. praelatura.] The state or dignity of a prelate; prelacy. --Milman. [1913 Webster]WordNet (r) 3.0 (2006):
prelature n 1: prelates collectively [syn: prelacy, prelature] 2: the office or station of a prelate [syn: prelacy, prelature]