rotationdetector
nounUK /rəʊˈteɪʃən dɪˌtektə/
US /roʊˈteɪʃən dɪˌtektər/
A rotation detector is a tool that tells you when something is turning.
The rotation detector beeped when the wheel started to spin.
RELATED WORDS
OTHER MEANINGS
2. A device in a machine that checks whether a part is spinning.
The engineer installed a rotation detector to watch the motor's speed.
3. A computer program that finds rotated images or text.
The rotation detector straightened the scanned page automatically.
4. A sensor that counts how many times something goes around.
The rotation detector counted each full turn of the drill.