noun
target age; relevant age group
Used in contexts such as product labeling, surveys, and services to indicate the intended or applicable age range.
このおもちゃの対象年齢は3歳以上です。
The target age for this toy is 3 years and older.
アンケートの対象年齢は20代から40代です。
The relevant age group for the survey is from the 20s to the 40s.
Compound of 対象 (target, object) and 年齢 (age).