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Definition of Dead-air space
1. Noun. An unventilated area where no air circulates. 
Generic synonyms: Area
Definition of Dead-air space
1. Noun. (construction) A sealed airspace in a cavity wall. ¹
¹ Source: wiktionary.com
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1. Noun. An unventilated area where no air circulates. 
1. Noun. (construction) A sealed airspace in a cavity wall. ¹
¹ Source: wiktionary.com