Definition of electromotograph in English:

electromotograph

noun

Electricity
historical
  • A device invented by Thomas Edison for producing movement of a lever (in a telegraph) or a diaphragm (in a telephone) by utilizing the variation in friction between two conductors in relative motion when the current between them varies.

Origin

Late 19th century.

Pronunciation

electromotograph

/ɪˌlɛktrə(ʊ)ˈməʊtəɡraef//ɪˌlɛktrə(ʊ)ˈməʊtəɡrɑːf/