The Collaborative International Dictionary of English v.0.48:

Reaggravation \Re*ag`gra*va"tion\
   (r[-e]*[a^]g`gr[.a]*v[=a]"sh[u^]n), n. (R. C. Ch.)
   The last monitory, published after three admonitions and
   before the last excommunication.
   [1913 Webster]