WordWeb Online

1. Make contact or come together
   "The two roads join here";
   - conjoin [formal]
    
2. Cause to become joined or linked
   "join these two parts so that they fit together"
    
3. Become part of; become a member of a group or organization
   "He joined the Communist Party as a young man";
   - fall in, get together
    
4. Come into the company of
   "She joined him for a drink"
    
5. Be or become joined or united or linked
   "Our paths joined";
   - connect, link, link up, unite

1. The shape or manner in which things come together and a connection is made
   - articulation, joint, juncture, junction
    
2. A set containing all and only the members of two or more given sets
   - union, sum

Derived forms: joins, joining, joined

Type of: connect, connection, connexion [Brit], link, link up, set, tie

Antonym: disjoin

Encyclopedia: Join, or die