The Collaborative International Dictionary of English v.0.48:

Coronation \Cor`o*na"tion\ (k?r`?-n?"sh?n), n. [See Coronate.]
   [1913 Webster]
   1. The act or solemnity of crowning a sovereign; the act of
      investing a prince with the insignia of royalty, on his
      succeeding to the sovereignty.
      [1913 Webster]

   2. The pomp or assembly at a coronation. --Pope.
      [1913 Webster]

WordNet (r) 3.0 (2006):

coronation
    n 1: the ceremony of installing a new monarch [syn:
         coronation, enthronement, enthronization,
         enthronisation, investiture]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "coronation":
   accedence, accession, anointing, anointment, appointment,
   arrogation, assignment, assumption, authorization, consecration,
   delegation, deputation, election, empowerment, enthronement,
   inauguration, induction, installation, installment, instatement,
   investiture, legitimate succession, placement, seizure, succession,
   taking office, taking over, usurpation



The Devil's Dictionary (1881-1906):

CORONATION, n.  The ceremony of investing a sovereign with the outward
and visible signs of his divine right to be blown skyhigh with a
dynamite bomb.