noun
Technical term used in medicine, psychology, and education to refer to age measured from date of birth, as opposed to developmental or mental age.
暦年齢と精神年齢には差がある場合がある。
There can be a gap between chronological age and mental age.
Standard kanji spelling using 暦 (calendar).
Variant spelling using 歴 (history/passage of time); less common but seen in some contexts.
Compound of 暦 (calendar) and 年齢 (age), literally 'calendar age'. The variant 歴年齢 uses 歴 (passage of time) with the same meaning.