union in WordNet English dictionary

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

1. of trade unions
   "the union movement"; "union negotiations"; "a union-shop clause in the contract"
   union