(いさん)

いさん
noun
heritage; inheritance; legacy
society
1. inheritance; estate; bequest
Property, money, or assets left behind by a deceased person to be distributed to heirs.
遺産(いさん)相続(そうぞく)する
To inherit an estate.
We divided our father's inheritance among the siblings.
遺産(いさん)相続(そうぞく)をめぐって親族間(しんぞくかん)(あらそ)()きること(すく)なくない
It is not uncommon for disputes to arise among relatives over inheritance.
2. heritage; legacy
Something of cultural, historical, or intellectual value passed down from previous generations.
It was registered as a World Heritage site.
This building is a valuable cultural heritage.
It is important to pass on the intellectual legacy left by our predecessors to the next generation.

遺産(いさん) covers both the legal concept of inheritance and the broader concept of cultural heritage.

Common collocations

The compound 世界(せかい)遺産(いさん) (World Heritage) is extremely common in Japanese media and travel contexts. Japan has numerous UNESCO World Heritage sites. ()遺産(いさん) (negative legacy) is used to describe harmful things inherited from the past, such as environmental damage or debt.