transboundary From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsadjectiveAcross a boundary. Related wordsSynonymstransfrontiercross-bordertransjurisdictionaltransnationalcrossnationaltranscountrytransbordertransspatialinterborderinterterritorialtrans-jurisdictionalborderwidetranscolonialtransregionalcross-citytransfluvial References Wiktionary — transboundary Wikipedia — transboundary