Encyclopedic novel

/ɛnsˌaɪkləʊpˈiːdɪk nˈɒvəl/

/ɛnsˌaɪkloʊpˈiːdɪk nˈɑːvəl/

Encyclopedic novel

a work of fiction that aims to provide a comprehensive and detailed account of a particular time period or subject