Nonagenarian has 4 different meanings across 2 categories:
Noun
· Adjective
Noun
1
someone whose age is in the nineties
2
One who is between the age of 90 and 99, inclusive. One who is in his or her tenth decade.
Adjective
1
being from 90 to 99 years old
"the nonagenarian inhabitants of the nursing home"
2
Being between the ages of 90 and 99, inclusive. In one's tenth decade.
Broader Terms (hypernyms)