ultrasonicdetector
nounUK /ˌʌltrəˈsɒnɪk dɪˈtektə/
US /ˌʌltrəˈsɑːnɪk dɪˈtektər/
A tool that uses very high sounds people cannot hear to find things.
The bat uses its own ultrasonic detector to find bugs in the dark.
RELATED WORDS
OTHER MEANINGS
2. A device that finds hidden objects like pipes or cracks by bouncing high-pitched sound off them.
The plumber used an ultrasonic detector to find the leak behind the wall.
3. An electronic tool that senses movement or distance using sound waves too high for humans to hear.
The robot's ultrasonic detector stopped it before it hit the chair.
4. A machine that listens for very high sounds to check if equipment is working properly.
The engineer pointed the ultrasonic detector at the machine to hear a tiny hiss.