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air gap

American

noun

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.

Etymology

Origin of air gap

First recorded in 1895–1900

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If you have an air gap, some of the heat goes down, not up.

From Seattle Times • Jan. 25, 2024

An air gap is a security measure used to isolate multiple systems from linking, such as a computer connecting to WiFi.

From Washington Times • Dec. 12, 2023

Its fire resistance comes from a two-layer construction, with an air gap in between for added insulation.

From Scientific American • Jul. 25, 2022

Removing the existing drywall would increase the depth of the air gap between the units, and adding two layers of thick drywall would boost the mass, he said.

From Washington Post • Jun. 20, 2022

I can't stop to explain this apparatus just now, but it is composed of a ring magnet, a copper tube which lies in an air gap of a magnetic field, and a stationary central armature.

From The Social Gangster by Reeve, Arthur B. (Arthur Benjamin)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023