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gasahol
gasbag
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gaseous
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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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