also: オーバレイ · オーバーレー
noun, noun or participle which takes 'suru', transitive verb
General term for something placed over another, such as a transparent sheet, graphic layer, or covering.
地図にオーバーレイを重ねてルートを確認する。
I overlay a transparent sheet on the map to check the route.
動画編集ソフトでテキストをオーバーレイする
I overlay text using video editing software.
noun, noun or participle which takes 'suru', transitive verb
In computing, a technique where a block of program code or data is loaded into memory, replacing previously loaded code.
古いシステムでは、メモリ不足を補うためにオーバーレイが使われた。
In old systems, overlays were used to compensate for memory shortages.