centenarian centenar • centenarianism · · · Info · Definitions · Characters · · centenarian · · Text Latin · · Script 11 · · Length Definitions · · · (noun) someone who is at least 100 years old. · · Noun Definition 1 (adj) being at least 100 years old. · · Adjective Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074