Definition of union

Definition of union
  1. union Noun The act of uniting or joining two or more things into one, or the state of being united or joined; junction; coalition; combination.
  2. union Noun That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.
  3. union Noun A joint or other connection uniting parts of machinery, such as pipes.
  4. union Noun The set containing all of the elements of two or more sets.
  5. union Noun The act or state of marriage.
  6. union Noun Sexual intercourse.
  7. union Noun A data structure that can store any of various items, but only one at a time.
  8. union Noun A large, high-quality pearl.
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