noun
ownerless property; bona vacantia
Legal term for property without an owner, such as abandoned items or unclaimed assets. Used in civil law contexts.
無主物は、法律上、先占によって所有権を取得できる場合がある。
Under the law, ownership of ownerless property may sometimes be acquired by occupation.
海岸に打ち上
Flotsam washed ashore is sometimes regarded as ownerless property.
占有 means possession or occupation, and is a key concept related to acquiring ownership of 無主物.
Compound of 無 (mu, 'without') + 主 (shu, 'owner') + 物 (butsu, 'thing'). The exact historical derivation is uncertain, but the term follows standard Sino-Japanese legal vocabulary patterns.