subseries

noun

sub·​se·​ries ˈsəb-ˌsir-(ˌ)ēz 

variants or sub-series

plural subseries or sub-series

: a series that is part of a larger series

… a full relaunch of the flagship series, including a subseries devoted entirely to Kevin Keller, the first openly gay character written for the comics.

—The Georgetown Voice

The best way to think of Trails is as a collection of three sub-series. Each of these sub-series is set in a different country, and there are plenty of references and character crossovers, but you can play each one on its own.

—Jason Schreier

Word History

First Known Use

1821, in the meaning defined above