Search Result for "tesla coil":
Wordnet 3.0

NOUN (1)

1. a step-up transformer with an air core; used to produce high voltages at high frequencies; 



The Collaborative International Dictionary of English v.0.48:

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.]


WordNet (r) 3.0 (2006):

Tesla coil
    n 1: a step-up transformer with an air core; used to produce
         high voltages at high frequencies