Definition of phonopore in English:

phonopore

noun

historical
  • An apparatus incorporating two insulated wires wound together so as to combine features of a capacitor and an induction coil, by means of which a telephone or telegraph circuit could be superimposed on an active circuit without interfering with the current carrying the original transmission.

Origin

Late 19th century; earliest use found in The Manufacturer and Builder. From phono- + ancient Greek πόρος passage.

Pronunciation

phonopore

/ˈfəʊnəpɔː/