#illusion__semblance an erroneous mental representation
supertype: appearance.internal_representation a mental representation; "I tried to describe his appearance to the police"
subtype: phantom__apparition__shadow something existing in perception only: "a ghostly apparition at midnight"
subtype: unidentified_flying_object__UFO__flying_saucer an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins
subtype: Flying_Dutchman.phantom__flyingdutchman a phantom ship that is said to appear in storms near the Cape of Good Hope
subtype: spook__ghost__shade__wraith__specter a mental representation of some haunting experience; "he looked like he had seen a ghost"; "it aroused specters from his past"
subtype: phantom_limb__phantomlimb the illusion that a limb still exists after it has been amputated
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