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ILLUSION definition: 1. an idea or belief that is not true: 2. something that is not really what it seems to be: 3. an…. Learn more.
1. a (1) : a misleading image presented to the vision : optical illusion. (2) : something that deceives or misleads intellectually. b (1) : perception of something objectively existing in such a way as to cause misinterpretation of its actual nature. (2) : hallucination sense 1. (3) : a pattern capable of reversible perspective. 2. a (1)
Illusions are special perceptual experiences in which information arising from “real” external stimuli leads to an incorrect perception, or false impression, of the object or event from which the stimulation comes.
illusion, hallucination, delusion refer to false perceptions or ideas. An illusion is a false mental image produced by misinterpretation of things that actually exist: A mirage is an illusion produced by reflection of light against the sky.
An illusion is an act of deception. Some optical illusions are pretty cool to watch, but an illusion can also point to an erroneous belief or false perception of reality, which is where you start getting into hallucination territory — seeing things that aren't there.
noun. us / ɪˈluː.ʒ ə n / uk / ɪˈluː.ʒ ə n / Add to word list. C2 [ C or U ] an idea or belief that is not true: have no illusion about He had no illusions about his talents as a singer. under no illusion I'm under no illusions (= I understand the truth) about the man I married.
noun. 1. a false idea or conception; belief or opinion not in accord with the facts. 2. an unreal, deceptive, or misleading appearance or image. a large mirror giving the illusion of space in a small room. 3. a. a false perception, conception, or interpretation of what one sees, where one is, etc.
