union union /ˈjuːnjən/

adjective

1. Of trade unions  ( union )
   of trade unions
    The union movement
   the union movement
    Union negotiations
   union negotiations
    A union-shop clause in the contract
   a union-shop clause in the contract
   

noun

1. () An organization of employees formed to bargain with the employer  ( brotherhood , trade union , trades union , labor union [American] , union , labour union [Canadian, British] )
   an organization of employees formed to bargain with the employer
    You have to join the union in order to get a job
   you have to join the union in order to get a job
   
2. () The act of pairing a male and female for reproductive purposes  ( conjugation , coupling , pairing , mating , sexual union , union )
   the act of pairing a male and female for reproductive purposes
    The casual couplings of adolescents
   the casual couplings of adolescents
    The mating of some species occurs only in the spring
   the mating of some species occurs only in the spring
   
   
3. The act of making or becoming a single unit  ( conjugation , jointure , unification , union , uniting )
   the act of making or becoming a single unit
    The union of opposing factions
   the union of opposing factions
    He looked forward to the unification of his family for the holidays
   he looked forward to the unification of his family for the holidays
   
4. A device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner)  ( union )
   a device on a national flag emblematic of the union of two or more sovereignties (typically in the upper inner corner)
   
5. The occurrence of a uniting of separate parts  ( union )
   the occurrence of a uniting of separate parts
    Lightning produced an unusual union of the metals
   lightning produced an unusual union of the metals
   
6. A set containing all and only the members of two or more given sets  ( join , sum , union )
   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
   let C be the union of the sets A and B
   
7. A political unit formed from previously independent people or organizations  ( union )
   a political unit formed from previously independent people or organizations
    The Soviet Union
   the Soviet Union
   
8. Healing process involving the growing together of the edges of a wound or the growing together of broken bones  ( conglutination , union )
   healing process involving the growing together of the edges of a wound or the growing together of broken bones
   
9. The state of being a married couple voluntarily joined for life (or until divorce)  ( spousal relationship , union , wedlock , marriage , matrimony )
   the state of being a married couple voluntarily joined for life (or until divorce)
    A long and happy marriage
   a long and happy marriage
    God bless this union
   God bless this union
   
   
10. The state of being joined, united or linked  ( unification , union )
    the state of being joined, united or linked
     There is strength in union
    there is strength in union
    

 Union

adjective

1. () Being of or having to do with the northern United States and those loyal to the Union during the American Civil War  ( Federal , Union )
   being of or having to do with the northern United States and those loyal to the Union during the American Civil War
    Union soldiers
   Union soldiers
    Federal forces
   Federal forces
    A Federal infantryman
   a Federal infantryman
   

noun

1. () The United States (especially the northern states during the American Civil War)  ( Union , North )
   the United States (especially the northern states during the American Civil War)
    He has visited every state in the Union
   he has visited every state in the Union
    Lee hoped to detach Maryland from the Union
   Lee hoped to detach Maryland from the Union
    The North's superior resources turned the scale
   the North's superior resources turned the scale