noun (n)

• the process whereby heat changes something from a solid to a liquid(noun.process)

  Example:
  The thawing of a frozen turkey takes several hours.
  

  Synonym:
  melt, melting, thaw
  

  source: wordnet30
• warm weather following a freeze; snow and ice melt(noun.phenomenon)

  Synonym:
  thaw, warming
  

  source: wordnet30