1. the acts or processes of making something invalid or void
Usage: plural form of invalidation

Examples

• The court's invalidations of the contracts left both parties without legal recourse.
• Multiple invalidations of the test results delayed the research project.
• The invalidations were based on procedural errors in the original documents.
• Software bugs caused frequent invalidations of user sessions.
• The invalidations of expired licenses affected thousands of drivers.
• Legal experts reviewed the invalidations to ensure they were properly executed.