coterminous
From Longman Dictionary of Contemporary EnglishRelated topics: Geographycoterminousco‧ter‧mi‧nous /kəʊˈtɜːmɪnəs $ koʊˈtɜːr-/ adjective technical 1 formal having the same pattern or features2 SGcoterminous countries share the same borderExamples from the Corpuscoterminous• With us privacy and kinship are felt to be roughly coterminous.• Coherent planning and coordination of health and social care would be facilitated by coterminous boundaries between the two authorities.• Keeping the principle of coterminous boundaries meant 90 health authorities, varying widely in population size.