subgeneration

noun

sub·​gen·​er·​a·​tion ˌsəbˌje-nə-ˈrā-shən 

variants or sub-generation

plural subgenerations or sub-generations

: a generation that is part of a larger generation

… Prince tapped into the angst of a subgeneration, those of us sandwiched between the real boomers and Gen Xers.

—Teresa Wiltz

Word History

First Known Use

1873, in the meaning defined above