English to English

noun (n)

• destruction by annihilating something(noun.act)

  Synonym:
  obliteration
  

  source: wordnet30
• total destruction(noun.event)

  Example:
  Bomb tests resulted in the annihilation of the atoll.
  

  Synonym:
  disintegration
  

  source: wordnet30
• The act of reducing to nothing, or nonexistence; or the act of destroying the form or combination of parts under which a thing exists, so that the name can no longer be applied to it; as, the annihilation of a corporation.(noun)

  source: webster1913