The Collaborative International Dictionary of English v.0.48:

Renunciatory \Re*nun"ci*a*to*ry\ (r?-n?n"sh?-?-t?-r?), a. [Cf.
   LL. renuntiatorius.]
   Pertaining to renunciation; containing or declaring a
   renunciation; as, renunciatory vows.
   [1913 Webster]