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1. Dictionary

   il·lu·sion

   /iˈlo͞oZH(ə)n/

   noun

   • 1. a thing that is or is likely to be wrongly perceived or interpreted by the senses: "the illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background" Similar miragehallucinationapparitionphantasmphantomvisionspecterfantasyfigment of the imaginationwill-o'-the-wisptrick of the lightignis fatuus
   • ▪ a deceptive appearance or impression: "the illusion of family togetherness" Similar appearanceimpressionimitationsemblancepretenseshamfalse appearancedeceptive appearancedeceptionmisperceptionrare:simulacrumOpposite reality
   • ▪ a false idea or belief: "he had no illusions about the trouble she was in" Similar delusionmisapprehensionmisconceptiondeceptionfalse impressionmistaken impressionfantasydreamchimerafool's paradiseself-deceptioncastles in the aircastles in Spainfallacyerrormisjudgmentfancy

   Word Origin Middle English (in the sense ‘deceiving, deception’): via Old French from Latin illusio(n-), from illudere ‘to mock’, from in- ‘against’ + ludere ‘play’.

   Derivatives

   • 1. illusional adjective
   • 2. illusionary adjective

   Scrabble Points: 8

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   More definitions, origin and scrabble points

2. www.merriam-webster.com › dictionary › illusionIllusion Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › illusion

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   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)

3. dictionary.cambridge.org › dictionary › englishILLUSION | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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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.

4. www.britannica.com › topic › illusionIllusion | Definition, Examples, & Facts | Britannica

   www.britannica.com › topic › illusion

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   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.

5. www.dictionary.com › browse › illusionILLUSION Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › illusion

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   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.

6. www.vocabulary.com › dictionary › illusionIllusion - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › illusion

   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.

7. www.collinsdictionary.com › dictionary › englishILLUSION definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   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.

8. dictionary.cambridge.org › us › dictionaryILLUSION | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   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. www.oxfordlearnersdictionaries.com › definition › englishillusion noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › definition › english

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   illusion. noun. /ɪˈluːʒn/ [countable, uncountable] a false idea or belief, especially about somebody or about a situation. under the illusion that… She's under the illusion that (= believes wrongly that) she'll get the job.

10. www.thefreedictionary.com › illusionIllusion - definition of illusion by The Free Dictionary

    www.thefreedictionary.com › illusion

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    n. 1. a false appearance or deceptive impression of reality: the mirror gives an illusion of depth. 2. a false or misleading perception or belief; delusion: he has the illusion that he is really clever. 3. (Psychology) psychol a perception that is not true to reality, having been altered subjectively in some way in the mind of the perceiver.

11. dictionary.cambridge.org › dictionary › learner-englishILLUSION | meaning - Cambridge Learner's Dictionary

    dictionary.cambridge.org › dictionary › learner-english

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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: . Learn more.