noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A method of train telegraphy. The train carries a circuit including a coil, and messages are picked up by it from coils along the line into which an alternating current is passed. A telephone is used as a receiver in place of a sounder or relay. historical

Etymology

From induct + -o- + -phone.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.