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  1. ILLUSION Definition & Meaning - Merriam-Webster

    illusion implies a false ascribing of reality based on what one sees or imagines.

  2. Museum of Illusions New York

    Mar 8, 2026 · Discover the world's most extraordinary collection of perspective-changing rooms, mind-bending installations, and optical illusions.

  3. Illusion | Definition, Examples, & Facts | Britannica

    illusion, a misrepresentation of a “real” sensory stimulus —that is, an interpretation that contradicts objective “reality” as defined by general agreement. For example, a child who perceives tree …

  4. ILLUSION Definition & Meaning | Dictionary.com

    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 …

  5. Illusion - Wikipedia

    An illusion is a distortion of the senses, which can reveal how the mind normally organizes and interprets sensory stimulation. Although illusions distort the human perception of reality, they are generally …

  6. ILLUSION definition in American English | Collins English ...

    An illusion is something that appears to exist or be a particular thing but does not actually exist or is in reality something else. Floor-to-ceiling windows can look stunning, giving the illusion of extra height.

  7. ILLUSION | definition in the Cambridge English Dictionary

    ILLUSION meaning: 1. an idea or belief that is not true: 2. something that is not really what it seems to be: 3. an…. Learn more.