- Electricity. the space between two objects magnetically related, as between the rotor and the stator in a dynamo, or between two objects electrically related, as between the electrode and the tip of a spark plug.
Origin of air gap
First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for air gap
By bending this stop the air-gap between the points may be decreased.The Automobile Storage Battery
O. A. Witte
Spark-gap, with the hyphen, means the air-gap between the opposed faces of the electrodes in which sparks are produced.The Radio Amateur's Hand Book
A. Frederick Collins
The air-gap is determined by the thickness of the separator between the carbon blocks.
The Kellogg Company regularly equips its magneto telephones with air-gap arresters of the type shown in Fig. 211.
Fig. 213 suggests the relation between such an impedance and air-gap arrester.