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conterminous

[kuh n-tur-muh-nuh s]
adjective
  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.
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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 formscon·ter·mi·nal·ly, con·ter·mi·nous·ly, adverbcon·ter·mi·nal·i·ty, con·ter·mi·nous·ness, nounnon·con·ter·mi·nal, adjectivenon·con·ter·mi·nous, adjectivenon·con·ter·mi·nous·ly, adverb

coterminous

[koh-tur-muh-nuh s]
adjective
  1. having the same border or covering the same area.
  2. 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-
Related formsco·ter·mi·nous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for coterminal

conterminous

conterminal (kənˈtɜːmɪnəl) or coterminous (kəʊˈtɜːmɪnəs)

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

Word Origin for conterminous

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

coterminous

conterminous

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

conterminous

adj.

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

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coterminous

adj.

1630s, malformed in English from co- + terminous (see terminal). Latin purists prefer conterminous.

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Online Etymology Dictionary, © 2010 Douglas Harper