A term used to describe demographic categories distinguished by age, typically in biological, ecological or demographic studies.

आयु वर्ग विशेष

English Usage: The researchers found significant differences in behavior between the over age class and the younger age class.

Hindi Usage: शोधकर्ताओं ने आयु वर्ग के बीच के व्यवहार में महत्वपूर्ण अंतर पाए गए।