1. the practice or techniques of identifying diseases or problems through examination and analysis
Usage: medical; technical
2. computer programs or procedures used to detect and identify problems in hardware or software
Usage: computing; technical

Examples

• The hospital invested in new medical diagnostics equipment.
• Advanced diagnostics helped doctors identify the rare condition.
• The car’s onboard diagnostics system detected an engine problem.
• Computer diagnostics revealed a faulty memory module.
• The technician ran diagnostics to find the network issue.
• Modern diagnostics can detect diseases at early stages.
• The software includes built-in diagnostics for system monitoring.