1. the act or process of discovering or identifying the presence of something
2. the act of finding out that someone has done something wrong or illegal

Examples

• The early detection of cancer can save lives.
• Security cameras help with the detection of theft.
• The detection of the gas leak prevented a disaster.
• Modern equipment allows for the detection of very small amounts of radiation.
• The criminal avoided detection for months.
• Smoke detectors are designed for the quick detection of fire.
• The detection of fraud in the company led to arrests.