"to cover the surface of (something)," c. 1300, in part from Old English oferlecgan "to place over," also "to overburden," and in part from over- + lay (v.). There also was an overlie in Middle English, but it merged into this word. Similar compounds are found in other Germanic languages, such as Gothic ufarlagjan. Related: Overlaid; overlaying.
overlay (n.)
in the printing sense, 1824, from overlay (v.). Meaning "transparent sheet over a map, chart, etc." is from 1938. In earliest noun use it meant "a necktie" (1725).
例文
1. Silver overlay is bonded to the entire surface.
表面全体に銀がめっきされている。
2.An overlay of wood covers the brick wall.
煉瓦壁に板が覆われている。
3.There can be an emotional overlay to the frustration of solving real problems.
本当の問題が解決しにくくて落ち込んでいるときは、他の感情でごまかすことができるかもしれません。
4.In parallel or concordant bedding the strata overlay each other like pages of a book.
平行または統合のレベルでは、地層はページのように重なり合っている。
5. In 1969 a ( 51 mm ) bituminous concrete overlay was placed on the concrete deck.