noun \ˌnō-nə-jə-ˈner-ē-ən, ˌnä-\

: a person who is between 90 and 99 years old

Full Definition of NONAGENARIAN

:  a person whose age is in the nineties
nonagenarian adjective


Latin nonagenarius containing ninety, from nonageni ninety each, from nonaginta ninety, from nona- (akin to novem nine) + -ginta (akin to viginti twenty) — more at nine, vigesimal
First Known Use: 1804


Next Word in the Dictionary: nonagesimal
Previous Word in the Dictionary: nonaged
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