magnetic field detector
nounUK /mæɡˈnetɪk fiːld dɪˈtektə/
US /mæɡˈnetɪk fiːld dɪˈtektər/
A magnetic field detector is a tool that tells you when a magnet is near.
The scientist used a magnetic field detector to find the hidden magnet under the table.
RELATED WORDS
OTHER MEANINGS
2. A device used in phones to sense direction and position.
Your phone's magnetic field detector helps the compass app point north.
3. An instrument scientists use to study Earth's magnetic field.
The magnetic field detector showed a small change near the volcano.
4. A gadget that checks whether a metal object is magnetized.
He waved the magnetic field detector over the screwdriver to see if it was magnetic.