Noun | 1. | sexagenarian - someone whose age is in the sixties |
Adj. | 1. | sexagenarian - being from 60 to 69 years old; "the sexagenarian population is growing" old - (used especially of persons) having lived for a relatively long time or attained a specific age; "his mother is very old"; "a ripe old age"; "how old are you?" |