vital capacity vital • vital force · · · Info · Definitions · Characters · · vital capacity · · Text Common · · Latin · · Scripts 14 · · Length 6 · · Syllables Definitions · · · (noun) the maximum amount of air that can be exhaled after a maximum inhalation (usually tested with a spirometer); used to determine the condition of lung tissue. Synonyms: vital capacity. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 t latin small letter t U+0074 v latin small letter v U+0076 y latin small letter y U+0079