conterminous

UK: /kənˈtɜːmɪnəs/ US: (kən tûr′mə nəs)

WordReference Random House Unabridged Dictionary of American English © 2025

con•ter•mi•nous  (kən tûr′mə nəs), adj. 

1. having a common boundary;
   bordering;
   contiguous.
2. meeting at the ends;
   without an intervening gap:
   In our calendar system, the close of one year is conterminous with the beginning of the next.
3. coterminous.

Also, con•ter′mi•nal, coterminal. 

• Latin conterminus having a common border with, equivalent. to con- con- + terminus terminus; see -ous
• 1625–35

con•ter′mi•nal•ly, con•ter′mi•nous•ly, adv. 
con•ter′mi•nal′i•ty, con•ter′mi•nous•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

conterminous / kənˈtɜːmɪnəs/, conterminal / kənˈtɜːmɪn^əl/, coterminous / kəʊˈtɜːmɪnəs/ adjective

1. enclosed within a common boundary
2. meeting at the ends; without a break or interruption

Etymology: 17th Century: from Latin conterminus, from con- + terminus end, boundary

WordReference Random House Unabridged Dictionary of American English © 2025

co•ter•mi•nous  (kō tûr′mə nəs), adj. 

1. having the same border or covering the same area.
2. being the same in extent;
   coextensive in range or scope.

Also, co•ter•mi•nal (kō•tûr′mə•nl).

• 1790–1800; re-formation of conterminus; see co-

co•ter′mi•nous•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

coterminous / kəʊˈtɜːmɪnəs/, conterminous adjective

1. having a common boundary; bordering; contiguous
2. coextensive or coincident in range, time, scope, etc