Diagonal slash 斜線“ / ”
Dimension 文獻(xiàn)尺寸
Diorama 透視圖畫、立體透視模型
Direct access (Electronic resource) 直接訪問（電子資源）；參見Remote access
Direct subheading 直接副標(biāo)目；見Indirect subheading
Disc (Electronic resource) 光盤（電子資源）；見Optical disc (Electronic resource)
Disk (Electronic resource) 磁盤（電子資源）；參見Optical disc (ELectronic resource)
Distributor 發(fā)行者；對文獻(xiàn)具有或部分經(jīng)銷權(quán)的經(jīng)銷店或代理商。
Double leaf 雙折葉；參見Traditional format (Oriental books)