From Longman Dictionary of Contemporary Englishcoterminousco‧ter‧mi‧nous /kəʊˈtɜːmɪnəs $ koʊˈtɜːr-/ adjective technical 1 formal having the same pattern or features2 SGcoterminous countries share the same border
Examples from the Corpus
coterminous• 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.