1. Noun.  (countable) Anything that seems to be something that it is not.
  2. Noun.  (countable) A misapprehension; a belief in something that is in fact not true.
  3. Noun.  (countable) A magician’s trick.
  4. Noun.  (uncountable) The fact of being an illusion (in any of the above senses). (rfex, this is totally unclear to me) .

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This entry was last updated on RefTopia from its source on 3/20/2012.