In this Act, "property" means lost property and buried things, and quasi-lost property (meaning things of another person that have been possessed by mistake, things left behind by another person, and livestock that have run away; the same applies in the following Article).
この法律において「物件」とは、遺失物及び埋蔵物並びに準遺失物（誤って占有した他人の物、他人の置き去った物及び逸走した家畜をいう。次条において同じ。）をいう。
In this Act, "finding" means starting to possess property (or, in the case of buried things and things left behind by another person, discovering them).
この法律において「拾得」とは、物件の占有を始めること（埋蔵物及び他人の置き去った物にあっては、これを発見すること）をいう。
In this Act, "person who lost" means a person who had been in possession of property (including, if there is an owner or any other person who has a right to claim recovery of that property, that person).
この法律において「遺失者」とは、物件の占有をしていた者（他に所有者その他の当該物件の回復の請求権を有する者があるときは、その者を含む。）をいう。
In this Act, "facility" means a building or other facility (including mobile facilities such as vehicles, vessels and aircraft) in which a person in charge of its management is constantly present.
この法律において「施設」とは、建築物その他の施設（車両、船舶、航空機その他の移動施設を含む。）であって、その管理に当たる者が常駐するものをいう。