noun
external entity
Technical term in computing, especially in XML and data processing, referring to an external data source referenced by a document.
XML文書で外部実体を参照すると、外部ファイルの内容を取り込める。
By referencing an external entity in an XML document, you can include the contents of an external file.
Compound of 外部 (external) and 実体 (entity), directly corresponding to the English computing term 'external entity'.