overlay
UK: ˌəʊvəˈleɪ | US: ˌoʊvərˈleɪ
n. a layer covering another surface
vt. to place one thing over another, typically as a covering or decoration
vt. (computing) to display data or graphics on top of another image
The word "overlay" combines the Old English prefix "over-" (meaning "above" or "beyond") with the verb "lay" (from Old English "lecgan," meaning "to place"). The term originally described physically placing one object over another, later extending to abstract and digital contexts (e.g., graphical overlays). The morphemes retain their core meanings, making the compound logically transparent.
The artist used gold leaf to overlay the painting for a luxurious effect.
The map overlay shows traffic patterns in real time.
She decided to overlay the wooden table with a protective vinyl sheet.
In video editing, you can overlay text onto the footage.
The archaeological site revealed an overlay of Roman ruins atop older Celtic structures.