Medical Dictionary
illusion
noun il·lu·sion \il-ˈü-zhən\
Medical Definition of ILLUSION
1
: a misleading image presented as a visual stimulus
2
a : perception of something objectively existing in such a way as to cause misinterpretation of its actual nature; especially : optical illusion—compare delusion 2 b : hallucination 1 c : a pattern capable of reversible perspective
—il·lu·sion·al \-ˈüzh-nəl, -ən-əl\ adjective
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