Found 2 items, similar to Tesla coil.
English → English (WordNet) Definition: Tesla coil Tesla coil n : a step-up transformer with an air core; used to produce high voltages at high frequencies
English → English (gcide) Definition: Tesla coil Tesla coil \Tes"la coil\, Tesla transformer \Tes"la trans*form"er\ [After N. Tesla, American electrician.] (Elec.) A transformer without iron, for high frequency alternating or oscillating currents; an oscillation transformer. [Webster 1913 Suppl.]