[ kuh n-tur-muh-nuh s ]
/ kənˈtɜr mə nəs /


having a common boundary; bordering; contiguous.
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.

Nearby words

  1. contentiously,
  2. contentive,
  3. contently,
  4. contentment,
  5. contents,
  6. contessa,
  7. contest,
  8. contestant,
  9. contestation,
  10. contested

Also con·ter·mi·nal [kuh n-tur-muh-nl] /kənˈtɜr mə nl/, co·ter·mi·nal [koh-tur-muh-nl] /koʊˈtɜr mə nl/.

Origin of conterminous

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

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for conterminal


conterminal (kənˈtɜːmɪnəl) or coterminous (kəʊˈtɜːmɪnəs)

/ (kənˈtɜːmɪnəs) /


enclosed within a common boundary
meeting at the ends; without a break or interruption
Derived Formsconterminously, conterminally or coterminously, adverb

Word Origin for conterminous

C17: from Latin conterminus, from con- + terminus end, boundary

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for conterminal



1670s, from Latin conterminus "bordering upon, having a common boundary," from com- "together, with" (see com-) + terminus (see terminus).

Online Etymology Dictionary, © 2010 Douglas Harper