2.AdjectiveHaving 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."
3.AdjectiveHaving the same scope, range of meaning, or extent in time.
4.AdjectiveSaid of linked or related property leases that expire together.