nonagenarian

Meanings

Adjective

• Being between the ages of 90 and 99, inclusive. In one's tenth decade.
• Of or relating to a nonagenarian.

Noun

• One who is between the age of 90 and 99, inclusive. One who is in his or her tenth decade.

Origin

• From Latin nōnāgēnārius (from nonageni, from nonaginta, from nona- (akin to novem) + -ginta (akin to viginti), + -arius) -an