# illusion
## English
### Etymology

From Old French illusion, from Latin illūsiō, from illūdere, from in- (“at, upon”) + lūdere (“to play, mock, trick”). Displaced native Old English dwimmer.

### Pronunciation

* (Received Pronunciation) IPA: /ɪˈl(j)uːʒ(ə)n/
* (General American) enPR: ĭ-lo͞o'zhən, IPA: [ɪˈluː.ʒən]
* (Conservative RP) IPA: /ɪˈl(j)uːzj(ə)n/
* Audio (US):(file)
* Rhymes: -uːʒən

### Noun

illusion (countable and uncountable, plural illusions)
* (countable) Anything that seems to be something that it is not.
    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 flavours in food.
** 2002, “Do You Realize??”, performed by The Flaming Lips:You realize the sun don't go down it's just an illusion caused by the world spinning round.
* (countable) A misapprehension; a belief in something that is in fact not true.
    Jane has this illusion that John is in love with her.
* (countable) A magician’s trick.
* (uncountable) The state of being deceived or misled.

#### Synonyms

* (that seems to be something it is not): mirage, phantom
* (a belief in something untrue; the state of being misled): delusion
* (a belief in something untrue): misapprehension, misbelief, misconception

#### Derived terms

* argument from illusion
* barber pole illusion
* café wall illusion
* clustering illusion
* coffer illusion
* comparative illusion
* Cornsweet illusion
* cutaneous rabbit illusion
* Delboeuf illusion
* Ebbinghaus illusion
* Ehrenstein illusion
* end-of-history illusion
* flash-lag illusion
* Hering illusion
* illusion cake
* illusionist
* illusory
* introspection illusion
* irradiation illusion
* money illusion
* moon illusion
* Müller-Lyer illusion
* Oppel-Kundt illusion
* optical illusion
* Orbison illusion
* Pinocchio illusion
* Poggendorff illusion
* Ponzo illusion
* somatogravic illusion
* stopped clock illusion
* Thatcher illusion
* under the illusion
* watercolor illusion
* White's illusion
* Wundt illusion
* Zoellner illusion
* Zöllner illusion

#### Translations

    The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

## Danish
### Etymology

From French illusion, from Latin illūsio.

### Noun

illusion c (singular definite illusionen, plural indefinite illusioner)
* illusion

#### Inflection
### Further reading

* “illusion” in Den Danske Ordbog

## French
### Etymology

Borrowed from Latin illusiōnem.

### Pronunciation

* IPA: /i.ly.zjɔ̃/, /il.ly.zjɔ̃/
* Audio (Paris):(file)
* Rhymes: -ɔ̃
* Homophone: illusions

### Noun

illusion f (plural illusions)
* illusion

#### Derived terms

* illusion d’optique

#### Related terms

* illusoire
* illusoirement

#### Descendants

* → Danish: illusion

### Further reading

* “illusion”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

## Swedish
### Pronunciation

* IPA: /ɪlɵˈɧuːn/
* Audio:(file)

### Noun

illusion c
* an illusion

#### Declension

| | | nominative | genitive |
| singular | indefinite | illusion | illusions |
| singular | definite | illusionen | illusionens |
| plural | indefinite | illusioner | illusioners |
| plural | definite | illusionerna | illusionernas |

#### Derived terms

* illusionist

#### Related terms

* illusorisk

#### See also

* illustration
* illustrera
* synvilla
* trick

### References

* illusion in Svensk ordbok (SO)
* illusion in Svenska Akademiens ordlista (SAOL)
* illusion in Svenska Akademiens ordbok (SAOB)