substring substriate • substruct · · · Info · Definitions · Characters · · substring · · Text Latin · · Script 9 · · Length 2 · · Syllables Definitions · · · (noun) a string that is part of a longer string. · · Noun Definition 1 Characters · · b latin small letter b U+0062 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075