In visual perception, an optical illusion (also called a visual illusion[2]) is an illusion caused by the visual system and characterized by a visual percept that arguably appears to differ from reality.

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

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 …

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 …

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 …

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.

An illusion is something that appears to exist or be a particular thing but does not actually exist or is in reality something else.

Nov 13, 2025 · We saw what looked like a tiger among the trees, but it was an illusion caused by the shadows of the branches. Using artificial additives, scientists can create the illusion of fruit …

Definition of illusion noun from the Oxford Advanced Learner's Dictionary. [countable, uncountable] a false idea or belief, especially about somebody or about a situation. under the …

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 …