overlay

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overlay

an applied decoration or layer, as of gold leaf

overlay

[′ō·vər‚lā]
(civil engineering)
A repair topping of asphalt or concrete placed on a worn roadway.
(computer science)
A technique for bringing routines into high-speed storage from some other form of storage during processing, so that several routines will occupy the same storage locations at different times; overlay is used when the total storage requirements for instructions exceed the available main storage.
(engineering)
Nonwoven fibrous mat (glass or other fiber) used as the top layer in a cloth or mat lay-up to give smooth finish to plastic products or to minimize the fibrous pattern on the surface. Also known as surfacing mat.
An ornamental covering, as of wood or metal.
(graphic arts)
A sheet attached to copy or artwork and containing special instructions about reproduction or arrangement.
A transparent or translucent film attached to artwork and carrying additional detail to be reproduced; in multicolor printing these overlays may represent the separation of the colors to be printed.

overlay

As it pertains to the pavements, it is an additional surface course placed on existing pavement either with or without an intermediate base or sub-base course, usually to strengthen the pavement or restore the profile of the surface.

overlay

(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.
References in periodicals archive ?
Overlays pose an interesting challenge for policy in multiple dimensions.
DTSS supports ASAS by providing maps that intelligence analysts overlay with the enemy situation (templated, analyzed, or raw data).
includes North American overlay and substrate volumes.
State regulators dropped plans Thursday for an area code overlay in the 310 area of Los Angeles County and allowed residents to resume dialing seven digits instead of 11 for local calls.
Lessels said that two of the company's four sales representatives in Toronto and Montreal, and three of its six representatives in the United States will be given the added responsibility of selling the hardwood overlays.
Clear overlays had no effect, and other colors generally had either no effect or a detrimental effect, Williams reported last week in Universal City, Calif.
Every time a product featured in a creator's video is clicked on and purchased, Overlay.
Often there is a problem that can be treated without the use of coloured overlays.
The entire state of Maryland has two overlays, thus requiring 1+10 digit dialing throughout the state.
But, as community members learned at a forum Thursday in Van Nuys, state officials are exploring options that may prevent or delay the need to either split up the Valley's 818 area code or overlay a different area code that would apply only to new phone lines.
LMA) recently published its seventh Annual Statistical Report covering all decorative overlays except high-pressure laminates.
City Attorney James Hahn is calling for an end to the area code splits and overlays that have confounded California phone systems in recent years.