NONAGENARIAN
nonagenarian
Noun
- One who is between the age of 90 and 99, inclusive. One who is in his or her tenth decade.
Adjective
- Being between the age of 90 and 99, inclusive. In one's tenth decade.
- Of or relating to a nonagenarian.
The above text is a snippet from Wiktionary: nonagenarian
and as such is available under the Creative Commons Attribution/Share-Alike License.