The Collaborative International Dictionary of English v.0.48:
Enthronement \En*throne"ment\, n. The act of enthroning, or state of being enthroned. [Recent] [1913 Webster]WordNet (r) 3.0 (2006):
enthronement n 1: the ceremony of installing a new monarch [syn: coronation, enthronement, enthronization, enthronisation, investiture]