Middle-age mid-distance • middle-aged · · · Info · Definitions · Characters · · Middle-age · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) the time of life between youth and old age (e.g., between 40 and 60 years of age). Synonyms: middle age. · · Noun Definition 1 Characters · · - hyphen-minus U+002D M latin capital letter m U+004D 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 i latin small letter i U+0069 l latin small letter l U+006C