In deserts, the reflection of your sky off this layer of air may give the illusion of the lake in the distance. psychol a perception that's not accurate to fact, having been altered subjectively in some way during the thoughts on the perceiver See also hallucination Artwork is illusionistic https://erickyfjos.jasperwiki.com/6831323/not_known_facts_about_illusion_of_kundun_mu_online