nonagenarian

名词 nonagenarian:

1. someone whose age is in the nineties

形容词 nonagenarian:

1. being from 90 to 99 years old

non.a.ge.nar.i.an

n.（名词）
A person 90 years old or between 90 and 00 years old.
九十至九十九岁的人：90岁或处于90岁到00岁之间的人

来源：
From Latin nôn3gôn3rius
源自 拉丁语 nôn3gôn3rius
from nôn3gôno [ninety each]
源自 nôn3gôno [九十个每个]
from nôn3gint3 [ninety]
源自 nôn3gint3 [九十]
nônus [ninth] * see nona-
nônus [第九] *参见 nona-
-gint3 [ten times] * see dekô
-gint3 [十倍] *参见 dekô

【引伸】
non.agenar.ian
adj.（形容词）