from the GNU version of the Collaborative International Dictionary of English
- n. A device for restoring a coherer to its normal condition after it has been affected by an electric wave, a process usually accomplished by some method of tapping or shaking, or by rotation of the coherer.
from The Century Dictionary and Cyclopedia
- n. Same as anticoherer.
Sorry, no etymologies found.
Of course, when the coherer switch is closed, the battery operates the decoherer.