noun
absolute age
Technical term in archaeology, geology, and related fields. Refers to a specific numerical age or date, as opposed to relative dating. Often contrasted with 相対年代 (relative age).
See also: 相対年代
放射性炭素年代測定法で遺跡の絶対年代が判明した。
The absolute age of the ruins was determined by radiocarbon dating.
相対年代 means relative age (ordering of events without specific numerical dates), while 絶対年代 refers to absolute age with a specific date or time range.
Compound of 絶対 (absolute) and 年代 (age, era). A straightforward technical term with no unusual historical derivation.