Source : Webster's Revised Unabridged Dictionary (1913)

Renunciation \Re*nun`ci*a"tion\ (r?-n?n`s?-?"sh?n or
   -sh?-?"sh?n; 277), n. [Cf. F. renonciation, L. renuntiatio
   ann announcement. See {Renounce}.]
   1. The act of renouncing.

   2. (Law) Formal declination to take out letters of
      administration, or to assume an office, privilege, or
      right.

   Syn: Renouncement; disownment; disavowal; disavowment;
        disclaimer; rejection; abjuration; recantation; denial;
        abandonment; relinquishment.

Source : WordNet®

renunciation
     n 1: rejecting or disowning or disclaiming as invalid;
          "Congressional repudiation of the treaty that the
          President had negotiated" [syn: {repudiation}]
     2: the state of having rejected your religious beliefs or your
        political party or a cause (often in favor of opposing
        beliefs or causes) [syn: {apostasy}, {defection}]
     3: an act (spoken or written) declaring that something is
        surrendered or disowned [syn: {renouncement}]
     4: the act of renouncing; sacrificing or giving up or
        surrendering (a possession or right or title or privilege
        etc.) [syn: {forgoing}, {forswearing}]