1. the act of joining or bringing together; union
Usage: formal
2. the joining of parties or claims in a legal action
Usage: legal

Examples

• The joinder of the two companies created a powerful corporation.
• The contract required the joinder of all parties before it became effective.
• The court allowed joinder of the related claims in a single lawsuit.
• The joinder of forces between the organizations strengthened their position.
• Legal joinder simplified the complex litigation process.
• The joinder of interests made the negotiation more efficient.