standard gauge standard deviation • standard generalized markup language · · · Info · Definitions · Characters · · standard gauge · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) railroad track having the standard width of 56.5 inches. Synonyms: standard gauge. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 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