The Collaborative International Dictionary of English v.0.48:

Renewal \Re*new"al\ (-al), n.
   The act of renewing, or the state of being renewed; as, the
   renewal of a treaty.
   [1913 Webster]

WordNet (r) 3.0 (2006):

renewal
    n 1: the conversion of wasteland into land suitable for use of
         habitation or cultivation [syn: reclamation, renewal,
         rehabilitation]
    2: the act of renewing
    3: filling again by supplying what has been used up [syn:
       refilling, replenishment, replacement, renewal]