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gas fitter
gas gangrene
gas gland
gas-guzzler
gas jet
gas law
gas-liquid chromatography
gas mark
gas mask
gas meter
gas oil
gas-permeable
gas plant
gas station
gas turbine
gas up
gasahol
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gas mask
gas mask (plural gas masks)


noun 
Definition:
 
mask protecting against poisonous gas: a mask provided with a filter and worn to protect the wearer's face and lungs from harmful gases
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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