## Meanings
1. An organized group of workers formed to protect their rights and bargain with employers.
2. A group of states, people, or organizations joined together as one.
3. The act of joining two or more things into one.
4. In mathematics, a set containing all the members of two or more sets.

## Examples
- You have to join the union in order to get a job.
- The union between the conservatives and the liberals did not last long.
- The union of the two companies created a powerful new firm.
- Let C be the union of the sets A and B.

## Derived Forms
- anti-union
- non-union
- unionise
- unionize

## Related Forms
- reunification
- reunion
- unify
- unity

## Roots and Affixes
- Root: unyoun
- Root: union
- Root: ūniō
- Root: ūnus

## Etymology
From Middle English unyoun, from Old French union, from Late Latin ūniō, ūniōnem (“oneness, unity”), from Latin ūnus (“one”). Doublet of unio.

## AI Etymology
Union is from Middle English unyoun, from Old French union, from Late Latin ūniō, ūniōnem (“oneness, unity”), from Latin ūnus (“one”). Doublet of unio. The historical line also includes Middle English unyoun, Old French union, la-lat ūniō, Latin ūnus. In present-day use, it can mean an organized group of workers formed to protect their rights and bargain with employers, or a group of states, people, or organizations joined together as one. Derived formations include anti-union, non-union, unionise, unionize.

## Topics
- Actions & Processes

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