[ koh-tur-muh-nuh s ]
/ koʊˈtɜr mə nəs /


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


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Also co·ter·mi·nal [koh-tur-muh-nl] /koʊˈtɜr mə nl/.

Origin of coterminous

1790–1800; re-formation of conterminous; see co-

OTHER WORDS FROM coterminous

co·ter·mi·nous·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for coterminous

British Dictionary definitions for coterminous



/ (kəʊˈtɜːmɪnəs) /


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