coterminous.

1. Sharing a common boundary or border.

2. Having the same boundaries, scope, or period as something else.

Use it for

Words that belong together

• coterminous territories
• coterminous districts

On the page

The coterminous territories disagreed over the bridge connecting them.

Two coterminous districts met at the road where the patrol stopped.

Usage notes

Primary category: setting. Forms: Relational or positional adjective; ordinary comparative and superlative usually not applicable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.