interregional
adjective
in·ter·re·gion·al ˌin-tər-ˈrēj-nəl 
-ˈrē-jə-nᵊl
variants or less commonly inter-regional
: occurring between, or existing between two or more regions
interregional communication/trade
Word History
First Known Use
1871, in the meaning defined above
- brachiolaria
- brachiolariae
- brachiolarian
- Brachionichthyidae
- brachiopod
- Brachiopoda
- brachiopodae
- brachiopodas
- brachiopodist
- brachiopodous
- brachiopods
- brachiosaur
- brachiosaurs
- Brachiosaurus
- brachiosauruses
- brachistocephalic
- brachistocephalous
- brachistocephaly
- brachistochrone
- brachistochronic
- brachs
- brachy
- brachy-
- brachy-form
- brachyaxis