paracosm
/ˈpɛrəˌkɑzəm/
noun
- A detailed imaginary world created in a person's mind, often developed during childhood.
- As a child, she invented a paracosm with its own language and geography.
- The siblings spent hours adding new characters to their shared paracosm.
- Many authors use a paracosm as the setting for their fantasy novels.
Synonyms