noun
estimated age; probable age
Used in forensic, archaeological, or medical contexts to refer to an age determined by estimation rather than exact records. Often appears in news reports about unidentified victims or remains.
遺体の推定年齢は30代から40代とみられる。
The estimated age of the body is believed to be in the 30s to 40s.
骨から推定年齢を割り出す。
Determine the estimated age from the bones.
Compound of 推定 (estimation) + 年齢 (age). The exact historical derivation is straightforward; both components are standard Sino-Japanese words.