plural of disjoint union

plural of pipe union

plural of customs union

plural of credit union

plural of labor union

(printing) A maker's mark imprinted on a work to show that it is sanctioned by members of a trade union. It is often a tiny elongated rhomboid containing and surrounded by, in minuscule typeface, identifying names and the union's local chapter number.

(politics, historical) The situation of two or more states sharing the same monarch, usually also with shared dynastic succession.

A legal union similar to marriage, established to allow same-sex couples (and, in some jurisdictions, opposite-sex couples) rights similar to those married couples have.

plural of union bug

The flag of Great Britain or the United Kingdom. / (nautical, Britain) The flag flown on ships of the government of Great Britain or the United Kingdom.