紀
キ, おさむ, ただす, とし, とも, のり, もと
chronicle, account, narrative, history, annals, geologic period
JLPT1 G4 S9 F780
己# arise + 糸 thread → raise threads. *History*, *narrative* (record) and *chronicle* are borrowed meanings, via 記.
[Full Kanji Etymology List]