The phrase "adult ages" refers to the period of time when a person is fully grown and considered to be a grown-up. It is the time when they have reached the age of maturity and are expected to take on more responsibilities. Full definition
However, by most accounts they have shot up; today it's estimated that 40 - 55 % of adults aged between 20 and 40 have acne. (supernaturalacnetreatment.com)
The dating sites for teens listed on this page may not be specifically for teens, but all have a solid member base of young adults aged under 25. (petesgrillandpizza.com)
Assisted all hospital nursing staff managing the flow of patients and material required for patient care for adult age groups. (cvtips.com)