subbranch

noun

sub·​branch ˈsəb-ˌbranch 

variants or sub-branch

plural subbranches or sub-branches

: a branch that is an offshoot or subdivision of a larger branch

The Southern Tungusic languages are a far more compact and diversified branch, subdivided into the Southeastern and Southwestern subbranches.

—William W. Fitzhugh and Aron Crowell

Birds are not only related to dinosaurs, they are dinosaurs. They're just a subbranch of dinosaurs.

—Michael Novacek

a bank subbranch

Word History

First Known Use

1816, in the meaning defined above