air break


Also found in: Acronyms.

air break

In a drainage system, a piping arrangement in which a drain from an appliance, device, or fixture discharges into the open air and then into another fixture, receptacle, or interceptor; used to prevent back siphonage or backflow.
References in periodicals archive ?
At 10-15 km above the surface, the air breaks into two branches flowing northward and southward towards higher latitudes.
M2 EQUITYBITES-November 26, 2013-Korean Air breaks ground on Incheon training campus(C)2013 M2 COMMUNICATIONS http://www.m2.com
Featuring a unique canopy top and a wrap-around glasshouse that includes the rear screen, the 9-X Air breaks the mould of conventional convertible design by offering four-seat accommodation within the close-coupled proportions of a sports car.
With the tastes of all dance fans catered for, the various music attractions include Radio 1 Main Stage, Godskitchen Arena, Electric Arena, Bedrock Transitions Arena, Sputnik Global Arena, Air Breaks Arena, Release Yourself Arena, Essential Selection Arena, Random Concept D&B Arena, Polysexual Arena, Circo Loco Terrace, Sundissential Terrace, Mixmag Terrace, Nocturnal Terrace and Strongbow Ciderhouse.
The air breaks through the superior constrictor pharyngeal muscle and finds its way easily into parapharyngeal neck spaces, where it dissects potential fascial planes of the neck.
The region of ozone-poor air breaks up in late October and November.