illusion meaning and definition

ILLUSION noun

Definition of illusion (noun)

1. an erroneous mental representation
   • synonyms: semblance
2. something many people believe that is false
   • "they have the illusion that I am very wealthy"
   • synonyms: fancy, fantasy, phantasy
3. the act of deluding; deception by creating illusory ideas
   • synonyms: delusion, head game
4. an illusory feat; considered magical by naive observers
   • synonyms: conjuration, conjuring trick, deception, legerdemain, magic, magic trick, thaumaturgy, trick