transitive verb-·laid′, -·lay′ing
- to lay or spread over
- to cover or overspread, as with a decorative layer of something
- Printing to place an overlay upon
- anything laid over another thing; covering
- a decorative layer or the like, applied in overlaying
- a transparent flap showing additional details, areas of color, etc. placed over a map, art work, etc.
- in betting, odds which are set higher than expected or warranted
- Printing the paper affixed to the impression surface of a press to help make a uniform impression
transitive verbo·ver·laid, o·ver·lay·ing, o·ver·lays
- To lay or spread over or on.
- a. To cover the surface of with a decorative layer or design: overlay wood with silver.b. To embellish superficially: a simple tune that was overlaid with ornate harmonies.
- Printing To put an overlay on.
- To create (a new area code) having the same boundaries as another: In Maryland, area code 240 was overlaid on top of area code 301.
- Something that is laid over or covers something else.
- A layer of decoration, such as gold leaf or wood veneer, applied to a surface.
- Printing A piece of paper used on a press tympan to vary the pressure that produces light and dark tones.
- A transparent sheet containing graphic matter, such as labels or colored areas, placed on illustrative matter to be incorporated into it.
- An area code whose boundaries are the same as another area code.
(third-person singular simple present overlays, present participle overlaying, simple past and past participle overlaid or overlayed)
- (printing) A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.
- (gambling) Odds which are set higher than expected or warranted. Favorable odds.
- (horse racing) A horse going off at higher odds than it appears to warrant, based on its past performances.
- A decal attached to a computer keyboard to relabel the keys.
over- +"Ž lay (compare overlie)
overlay - Computer Definition
In telecommunications, a deployment in which the new infrastructure parallels that of existing infrastructure. In a passive optical network (PON) deployment, for example, this approach enables the service provider to construct the new system and provide enhanced broadband service to PON subscribers as required, while continuing to serve others subscribing to more basic services from the old cable plant. See also brownfield, greenfield, infrastructure, and PON.
(1) A preprinted, precut form placed over a screen, key or tablet for identification purposes. See keyboard template.
(2) A program segment called into memory when required. When a program is larger than the memory capacity of the machine, parts of the program not in constant use can be set up as overlays. Each overlay called in overwrites the existing overlay in memory. Virtual memory provides for automatic overlays. See virtual memory.