[{"Bold_text": "noun", "List Items": ["a person or thing that detects.", "a device for detecting smoke, fire, or some other hazardous condition.", "a device for detecting the presence of metal, contraband, or other items that might be hidden or concealed.", "Telecommunications.a device for detecting oscillations or waves.a device, as a crystal detector crystal detectoror a vacuum tube, that rectifies the alternating current in a radio receiver.", "a device for detecting oscillations or waves.", "a device, as a crystal detector crystal detectoror a vacuum tube, that rectifies the alternating current in a radio receiver."]}]