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Medical Dictionary

illusion

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noun il·lu·sion \il-ˈü-zhən\

Medical Definition of illusion

  1. 1:  a misleading image presented as a visual stimulus

  2. 2a:  perception of something objectively existing in such a way as to cause misinterpretation of its actual nature; especially :  optical illusion—compare delusion 2b:  hallucination 1c:  a pattern capable of reversible perspective

  3. il·lu·sion·al \-ˈüzh-nəl, -ən-əl\play adjective





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