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Meaning of illusion

il•lu•sion

Pronunciation: (i-l'zhun), [key]
— n.
  1. something that deceives by producing a false or misleading impression of reality.
  2. the state or condition of being deceived; misapprehension.
  3. an instance of being deceived.
  4. a perception, as of visual stimulithat represents what is perceived in a way different from the way it is in reality.
  5. a very thin, delicate tulle of silk or nylon having a cobwebbed appearance, for trimmings, veilings, and the like.
  6. the act of deceiving; deception; delusion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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