n.
Pronunciation: ˌ n ō -n ə -j ə - ' ner- ē - ə n, ˌ nä-
Function: noun
Etymology: Latin nonagenarius containing ninety, from nonageni ninety each, from nonaginta ninety, from nona- (akin to novem nine) + -ginta (akin to intransitive verb ginti twenty) ― more at NINE , VIGESIMAL
Date: 1804
: a person whose age is in the nineties
– nonagenarian adjective