Origin of union

1400–50; late Middle English < Middle French < Late Latin ūniōn- (stem of ūniō), equivalent to Latin ūn(us) one + -iōn- -ion
Related formsin·ter·un·ion, noun, adjectivemis·un·ion, nounpre·un·ion, adjectivepro·un·ion, adjectiveself-un·ion, noun

Synonyms for union

Synonym study

1. Union, unity agree in referring to a oneness, either created by putting together, or by being undivided. A union is a state of being united, a combination, as the result of joining two or more things into one: to promote the union between two families; the Union of England and Scotland. Unity is the state or inherent quality of being one, single, individual, and indivisible (often as a consequence of union): to find unity in diversity; to give unity to a work of art. 5. See alliance.

Antonyms for union

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

Examples from the Web for inter-union

Historical Examples of inter-union

  • Old trade lines are instantly shifting, creating the most perplexing problem of inter-union amity.

    The Armies of Labor

    Samuel P. Orth

  • The feast of inter-communion shall be sure, when the blood-covenant of inter-union is complete.

    The Blood Covenant

    H. Clay Trumbull

British Dictionary definitions for inter-union


noun the Union

  1. the union of England and Wales from 1543
  2. the union of the English and Scottish crowns (1603–1707)
  3. the union of England and Scotland from 1707
  4. the political union of Great Britain and Ireland (1801–1920)
  5. the union of Great Britain and Northern Ireland from 1920
  1. the United States of America
  2. the northern states of the US during the Civil War
  3. (as modifier)Union supporters
short for the Union of South Africa



the condition of being united, the act of uniting, or a conjunction formed by such an act
an association, alliance, or confederation of individuals or groups for a common purpose, esp political
agreement or harmony
short for trade union
the act or state of marriage or sexual intercourse
a device on a flag representing union, such as another flag depicted in the top left corner
a device for coupling or linking parts, such as pipes
(often capital)
  1. an association of students at a university or college formed to look after the students' interests, provide facilities for recreation, etc
  2. the building or buildings housing the facilities of such an organization
Also called: join maths a set containing all members of two given sets. Symbol: ⋃, as in A⋃B
(in 19th-century England)
  1. a number of parishes united for the administration of poor relief
  2. a workhouse supported by such a combination
textiles a piece of cloth or fabric consisting of two different kinds of yarn
(modifier) of or related to a union, esp a trade union

Word Origin for union

C15: from Church Latin ūniō oneness, from Latin ūnus one
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 inter-union



early 15c., "action of joining one thing to another," from Old French union (12c.), from Late Latin unionem (nominative unio) "oneness, unity, a uniting," also in Latin meaning "a single pearl or onion," from unus "one," from PIE *oinos (see one).

Sense of "action of uniting into one political body" is attested from 1540s. Meaning "group of people or states" is from 1650s. Short for trade union, it is recorded from 1833. U.S. political sense is attested from 1775; used especially during the Civil War, in reference to the remainder of the United States after the Southern secession.

Online Etymology Dictionary, © 2010 Douglas Harper

inter-union in Medicine




The joining or amalgamation of two or more bodies.
The structural adhesion of the edges of a wound.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

inter-union in Science



A set whose members belong to at least one of a group of two or more given sets. The union of the sets {1,2,3} and {3,4,5} is the set {1,2,3,4,5}, and the union of the sets {6,7} and {11,12,13} is the set {6,7,11,12,13}. The symbol for union is . Compare intersection.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

inter-union in Culture


The United States; especially the northern states during the Civil War, which remained with the original United States government. (Compare Confederacy.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.