Definitions

1. adjective

being or pertaining to the same boundary or limits; adjacent or touching at a boundary; sharing a border or boundary

“The conterminant countries of the agreement have agreed to share resources.”

2. noun

something that is conterminant

“The conterminant territories of the empire were disputed among the warring factions.”

3. noun

a border or boundary

“The conterminant of the two countries was marked by a clear boundary.”

4. verb

to have a common boundary or frontier

“The two states conterminant with each other in a historic treaty.”