sour-gum family sour gum • sour-headed · · · Info · Definitions · Characters · · sour-gum family · · Text Common · · Latin · · Scripts 15 · · Length 5 · · Syllables Definitions · · · (noun) a family of dicotyledonous trees of order Myrtales that includes the sour gum trees. Synonyms: Nyssaceae, family Nyssaceae, sour-gum family, tupelo family. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 y latin small letter y U+0079