dead-air space dead-air • dead-alive · · · Info · Definitions · Characters · · dead-air space · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) an unventilated area where no air circulates. Synonyms: dead-air space. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073