Definitions

1. noun

The act or fact of failing to join or include something in a document, proceeding, or other legal or formal matter.

“The lawyer argued that the nonjoinder of a key witness had compromised the case.”

2. noun

A defect or irregularity resulting from the failure to join or include something, especially in a legal document or proceeding.

“The judge ruled that the nonjoinder of a necessary party was a fatal flaw in the plaintiff’s case.”