1. Connecting without a break; within a common boundary
   "the 48 conterminous states"
   - contiguous 
2. Having a common boundary or edge; abutting; touching
   "the side of Germany conterminous with France"
   - adjacent, contiguous, neighboring [US], neighbouring [Brit, Cdn] 
3. Being of equal extent or scope or duration
   - coextensive, coterminous

See also: commensurate, connected

• extensively
• extensiveness
• extensometer
• extensor
• extensor muscle
• extent
• extenuate
• extenuating
• extenuation
• extenuatory
• exterior
• exterior angle
• exterior door
• exteriorisation
• exteriorise
• exteriority
• exteriorization
• exteriorize
• exterminable
• exterminate
• exterminated
• extermination
• exterminator
• exterminatory
• extern