connecting without a break; within a common boundary
<adj.all> the 48 conterminous states the contiguous 48 states
having a common boundary or edge; abutting; touching
<adj.all> Rhode Island has two bordering states; Massachusetts and Conncecticut the side of Germany conterminous with France Utah and the contiguous state of Idaho neighboring cities
being of equal extent or scope or duration
<adj.all>
Conterminous \Con*ter"mi*nous\, a. [L. conterminus. Cf. {Conterminous}.] Having the same bounds, or limits; bordering upon; contiguous.
This conformed so many of them as were conterminous to the colonies and garrisons, to the Roman laws. --Sir M. Hale.