union

Healing process involving the growing together of the edges of a wound or the growing together of broken bones.

A device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner).

A political unit formed from previously independent people or organizations.

The occurrence of a uniting of separate parts.

“lightning produced an unusual union of the metals”

The act of pairing a male and female for reproductive purposes.

A set containing all and only the members of two or more given sets.

“let C be the union of the sets A and B”

An organization of employees formed to bargain with the employer.

“you have to join the union in order to get a job”

The state of being a married couple voluntarily joined for life (or until divorce).

“God bless this union”

The United States (especially the northern states during the American Civil War).

The state of being joined or united or linked.

“there is strength in union”

The act of making or becoming a single unit.

“the union of opposing factions”

Of trade unions.

“the union movement”

“union negotiations”

Being of or having to do with the northern United States and those loyal to the Union during the American Civil War.