subzone

noun

sub·​zone ˈsəb-ˌzōn 

variants or sub-zone

plural subzones or sub-zones

: a zone that is a subdivision of a larger zone

… achieves community connections by being divided into east, west and south zones, with subzones in each. Parents get to pick from any school in their subzone or the adjacent subzone.

—Dave Murray

All the great wine denominations in the world are divided into smaller, distinct subzones.

—Andrea Costanti

It is hard to generalize about vintage quality in a region so large, where growing conditions can vary from one subzone to the next.

—Kim Marcus

Word History

First Known Use

1851, in the meaning defined above