heterocosm

plural heterocosms

1. A separate or alternative world.

   Man, repelled by his debt to a physical mother, created an alternate reality, a heterocosm to give him the illusion of freedom.

   1990, Camille Paglia, Sexual Personae

   1 more example

   For Teskey, the exemplary poet of hallucination is Spenser, whose Fairyland is a stable heterocosm, which a reader can enter for sustained periods without undergoing any oscillatory experience.

   2007, William Poole, “Out of his Furrow”, in London Review of Books, volume 29, number 3, page 16