coterminous UK /kəˈtəː.mɪ.nəs/US /kəˈtɝ.mɪ.nəs/ adjective4 •Having matching boundaries; or, adjoining and sharing a boundary.New York's borough of Brooklyn and Kings County are coterminous.To get a building warrant he had to show the plans to "coterminous proprietors", neighbours with whom his property shared a boundary. •Having the same scope, range of meaning, or extent in time.From this it follows at once that language and thought are not strictly coterminous. — 1921 •Said of linked or related property leases that expire together. •Meeting end to end or at the ends.
