nonagenarian nonage • nonagency · · · Info · Definitions · Characters · · nonagenarian · · Text Latin · · Script 12 · · Length Definitions · · · (noun) someone whose age is in the nineties. · · Noun Definition 1 (adj) being from 90 to 99 years old. Example: "The nonagenarian inhabitants of the nursing home." · · Adjective Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072