union

The act of uniting or joining two or more things into one.countable

The state of being united or joined; a state of unity or harmony.uncountable

Something united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.countable

A trade union; a workers' union.countable

• In the autumn there was a row at some cement works about the unskilled labour men. A union had just been started for them and all but a few joined. One of these blacklegs was laid for by a picket and knocked out of time.

An association of students at a university for social and/or political purposes; also in some cases a debating body.countable

A joint or other connection uniting parts of machinery, such as pipes.countable

The set containing all of the elements of two or more sets.countable

The act or state of marriage.countable

Sexual intercourse.archaiceuphemisticuncountable

A data structure that can store any of various types of item, but only one at a time.countable

• Unions are useful in those cases where you need to keep track of a value that can be represented as different data types during the lifetime of the program.

To combine sets using the union operation.

Belonging to, represented by, or otherwise pertaining to a labour union.

• Actors have to be union to get work here.

federal.India

• The union government of India