General English




  • A confederation of individuals who share the same trade or similar trades and who have joined together for a common purpose.
  • A pipe fitting used to join two pipes without turning either pipe, consisting of a collar piece that is slipped on one pipe, and a shoulder that is threaded or soldered on that pipe and against which the collar piece bears. Unions allow dismantling a fitting without disturbing the pipe.


  • That which serves to join, couple, or bond parts. Also, such a union. Also, the state of being so joined.
  • The joining or merging of data entities such as rows or files.


  • noun the joining together of two parts of a fractured bone.


  • noun a state of being joined or the act of joining
  • noun a group of independent states or organisations which have joined together into a federation
  • noun the group of states which formed the United States of America
  • noun a trade union
  • noun a club or organisation for people with similar interests
  • noun
    (written as Union)
    the union of Great Britain and Northern Ireland since 1920

Origin & History of “union”

Union is one of a range of English words that go back to Latin ūnus ‘one’. this in turn was descended from a prehistoric Indo-European *oinos, which also produced English one. other members of the family include inch, ounce, unique, unite (15th c.), etc. As for union itself, its immediate ancestor was ūniō, a derivative of ūnus which denoted ‘unity’ or ‘the number one’. The application of the English word to an ‘association of workers’ dates from the early 19th century (a somewhat earlier term was combination).