1. conterminous, contiguous

connecting without a break; within a common boundary

Example Sentences:
'the 48 conterminous states'
'the contiguous 48 states'

Synonyms

• contiguous

2. adjacent, conterminous, contiguous, neighboring

having a common boundary or edge; abutting; touching

Example Sentences:
'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'

Synonyms

• adjacent
• contiguous
• neighboring

3. coextensive, conterminous, coterminous

being of equal extent or scope or duration

Synonyms

• coextensive
• coterminous