noun
birth and death; years of birth and death
Used in biographical contexts to indicate a person's lifespan, often seen in parentheses after a name, e.g., 生没年 (せいぼつねん).
彼の生没年は不明だ。
His years of birth and death are unknown.
この作家の生没は記録に残っていない。
The birth and death of this author are not recorded.
More common compound explicitly meaning 'years of birth and death'; 生没 is often used as an abbreviation in formal or compact contexts.
Compound of 生 (せい, 'birth') and 没 (ぼつ, 'death'). The variant 生歿 uses the character 歿, which also means 'death' but is less common.