washout

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Related to nitrogen washout: nitrogen washout curve

washout

1. Geology
a. erosion of the earth's surface by the action of running water
b. a narrow channel produced by this erosion
2. Aeronautics a decrease in the angle of attack of an aircraft wing towards the wing tip

washout

[′wäsh‚au̇t]
(engineering)
An overlarge well bore caused by the solvent and erosional action of drilling fluid.
A fluid-cut opening resulting from leaking fluid.
(mining engineering)
References in periodicals archive ?
If a nitrogen washout or helium dilution study is reported, it is good idea to check that the time for washout or dilution corresponds to the degree of obstruction as indicated by the flow volume loop graph pattern or the patient's FEV1/FVC ratio.
As part of the Innovative Medicines Initiative Joint Undertaking 11th Call, Queen~s University Belfast seeks to procure Multiple Breath Nitrogen Washout (MBW) Equipment to undertake Multiple Breath Washout testing as part of a multicentre clinical trial.
The single breath nitrogen washout test which includes the closing volume measurement, is performed with a demand valve, or reservoir bag, a pressure differential or other type pneumotachograph, microprocessor or chart recorder, and a nitrogen analyzer.