conterminous

 
Pronunciation: /kɒnˈtəːmɪnəs/

adjective

  • sharing a common boundary: the forty-eight conterminous United States
  • having the same area, context, or meaning: a genealogy conterminous with the history of the USA

Derivatives

conterminously

adverb

Origin:

mid 17th century: from Latin conterminus (from con- 'with' + terminus 'boundary') + -ous. Compare with coterminous