The Collaborative International Dictionary of English v.0.48:

Disclosure \Dis*clo"sure\ (?; 135), n. [See Disclose, v. t.,
   and cf. Closure.]
   1. The act of disclosing, uncovering, or revealing; bringing
      to light; exposure.
      [1913 Webster]

            He feels it [his secret] beating at his heart,
            rising to his throat, and demanding disclosure. --D.
                                                  Webster.
      [1913 Webster]

   2. That which is disclosed or revealed.
      [1913 Webster]

            Were the disclosures of 1695 forgotten? --Macaulay.
      [1913 Webster]

WordNet (r) 3.0 (2006):

disclosure
    n 1: the speech act of making something evident [syn:
         disclosure, revelation, revealing]