- 1coterminous (with something) (of countries or areas) sharing a border
- 2coterminous (with something) (of things or ideas) having so much in common that they are almost the same as each other He seems to regard the interests of the state as coterminous with the interests of the upper class.
coterminous
adjectiveNAmE//koʊˈtərmənəs//
[not usually before noun] (formal)Check pronunciation: coterminous