microtelephone means an early form of telephone capable of transmitting very faint sounds, in which the current generated by the vibration of the diaphragm is caused to pass through the diaphragm and core as well as the coil before it enters the line. Lexicurio rates it Sui generis — a strength score of 95 out of 100.
Etymology
micro- + telephone
noun
- An early form of telephone capable of transmitting very faint sounds, in which the current generated by the vibration of the diaphragm is caused to pass through the diaphragm and core as well as the coil before it enters the line.
- An early telephone having the transmitter and receiver mounted on the same handle for one-handed use.