induction coil

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noun Electricity.

a transformer for producing high-voltage alternating current from a low-voltage direct current, consisting essentially of two concentric coils with a common soft-iron core, a primary coil with relatively few windings of heavy wire, and a secondary coil with many turns of fine wire. Excitation of the primary coil by rapidly interrupted or variable current induces high voltage in the secondary coil.

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Also called Ruhmkorff coil.

Origin of induction coil

First recorded in 1875–80

Words nearby induction coil

induct, inductance, inductee, inductile, induction, induction coil, induction furnace, induction hardening, induction heating, induction loop system, induction motor

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use induction coil in a sentence

Induction would be a fitting gesture, even now when the honor would be posthumous.
The Greatest Rock Voice of All Time Belonged to Joe Cocker|Ted Gioia|December 23, 2014|DAILY BEAST
ABC had effectively removed the launching coil on its Modern Family springboard.
‘black-ish’ Is the New ‘Modern Family’|Kevin Fallon|October 1, 2014|DAILY BEAST
Dabbing wax on the coil or using hash oil on the wick also works.
This Is Your E-Cigarette on Drugs|Daniel Genis|July 28, 2014|DAILY BEAST
With time I learned to disassemble the entire hotpot and mount the heating coil on a roast beef can with a whole punched in it.
Tales of a Jailhouse Gourmet: How I learned to Cook in Prison|Daniel Genis|June 21, 2014|DAILY BEAST

Surprises Brooklyn bar after Hall of Fame induction ceremony.
Viral Video of the Day: Nirvana’s Secret Show|The Daily Beast Video|April 11, 2014|DAILY BEAST
Over this spot he twisted all the remaining hair into a coil about four inches long, pointing slightly forward like a horn.
Our Little Korean Cousin|H. Lee M. Pike
No matter what Jessie did to the tuning coil she could not bring that strangely broadcasted message back to their ears.
The Campfire Girls of Roselawn|Margaret Penrose
Amy adjusted the earphones while her friend manipulated the slides on the tuning coil.
The Campfire Girls of Roselawn|Margaret Penrose
She adjusted it, sticking the hat pin through the heavy coil of hair with some deliberation.
The Awakening and Selected Short Stories|Kate Chopin
“No visitors allowed aboard,” replied Mr Welton sternly; catching up, nevertheless, a coil of rope.
The Floating Light of the Goodwin Sands|R.M. Ballantyne

British Dictionary definitions for induction coil

induction coil

noun

a transformer for producing a high voltage from a low voltage. It consists of a cylindrical primary winding of few turns, a concentric secondary winding of many turns, and often a common soft-iron coreSometimes shortened to: coil

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for induction coil

induction coil

An electrical device consisting of a single coil of conductive material, often surrounding a metallic core, designed to establish a strong magnetic field around the coil. Changes in the current flow through the coil cause fluctuations in the magnetic field that induce a voltage across the coil. Induction coils have many applications, especially in circuits that tune to signals of specific frequencies, as in radios. The ability of an induction coil to induce a voltage is called inductance, and is measured in henrys. Compare capacitor.

A type of transformer that changes a low-voltage direct current to a high-voltage alternating current. Induction coils are used for many purposes, especially as spark coils for firing spark plugs in automobile engines and starting oil burners.