Added 9 October 2026 conterminous /kɒnˈtəː.mɪ.nəs/ adjective Categories: Describing WordsRare Words adjective ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about conterminous at Wordnik → Where our words come from → Connecting without a break; within a common boundary. the 48 conterminous states Having a common boundary or edge; abutting; touching. Rhode Island has two bordering states; Massachusetts and Connecticut Being of equal extent or scope or duration. Related Words: contiguousadjoiningadjacentabuttingconnectedborderingcoterminouscoextensiveadventivephysiographymeliorationinhering Back to today's word