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  1. 35 optical illusions and why they trick your brain

    May 20, 2025 · Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look …

  2. 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 …

  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 - Merriam-Webster

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

  5. 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 …

  6. Illusion - New World Encyclopedia

    Well-known illusions include the Muller-Lyer illusion, Ebbinghaus illusion, and the Moon illusion. Fictional illusions are defined as the perception of objects that are genuinely not there to all but a single …

  7. Illusion - definition of illusion by The Free Dictionary

    Define illusion. illusion synonyms, illusion pronunciation, illusion translation, English dictionary definition of illusion. misinterpretation of things that exist: A mirage is an illusion caused by atmospheric …

  8. 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.

  9. 10 Cool Optical Illusions and How They Work - Verywell Mind

    Jan 14, 2026 · An optical illusion involves tricking your vision by taking advantage of how the eyes and brain work together to interpret the visual stimuli in our environment.

  10. ILLUSION definition in American English | Collins English Dictionary

    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.