Source : Webster's Revised Unabridged Dictionary (1913)

Revisal \Re*vis"al\, n. [From {Revise}.]
   The act of revising, or reviewing and re["e]xamining for
   correction and improvement; revision; as, the revisal of a
   manuscript; the revisal of a proof sheet; the revisal of a
   treaty.

Source : WordNet®

revisal
     n : the act of rewriting something [syn: {revision}, {revise}, {rescript}]