Etymology
Advertisement

overlay (v.)

"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 German überlegen, Dutch overlegen, Gothic ufarlagjan. Related: Overlaid; overlaying.

overlay (n.)

in the printing sense, "bit of paper cut and pasted on an impression surface," by 1818, from overlay (v.). Meaning "transparent sheet over a map, chart, etc." is from 1938. In earliest noun use it meant "a necktie" (1725).

Others are reading

Advertisement
Advertisement
Definitions of overlay
1
overlay (v.)
put something on top of something else;
Synonyms: cover
overlay (v.)
kill by lying on;
The sow overlay her piglets
Synonyms: overlie
2
overlay (n.)
protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior;
Synonyms: sheathing / overlayer
overlay (n.)
a layer of decorative material (such as gold leaf or wood veneer) applied over a surface;
From wordnet.princeton.edu