head space headspace • head spar · · · Info · Definitions · Characters · · head space · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) the volume left at the top of a filled container (bottle or jar or tin) before sealing. Synonyms: headspace. · · Noun Definition 1 Characters · · space U+0020 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 h latin small letter h U+0068 p latin small letter p U+0070 s latin small letter s U+0073