layer

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layer

1. one of four or more levels of vegetation defined in ecological studies: the ground or moss layer, the field or herb layer, the shrub layer, and one or more tree layers
2. a laying hen
3. Horticulture
a. a shoot or branch rooted during layering
b. a plant produced as a result of layering

layer

[′lā·ər]
(computer science)
One of the divisions within which components or functions are isolated in a computer system with layered architecture or a communications system with layered protocols.
(geology)
A tabular body of rock, ice, sediment, or soil lying parallel to the supporting surface and distinctly limited above and below.
(geophysics)
One of several strata of ionized air, some of which exist only during the daytime, occurring at altitudes between 30 and 250 miles (50 and 400 kilometers); the layers reflect radio waves at certain frequencies and partially absorb others.
(metallurgy)
The stratum of weld metal consisting of one or more passes and lying parallel to the welding surface.

course

course, 1
1. A layer of masonry units running horizontally in a wall or, much less commonly, curved over an arch; it is bonded with mortar.
2. A continuous row or layer of material, as shingles, tiles, etc.

layer

layer

(1) One of several "drawing boards" or "canvasses" for creating elements in a picture. See layers and flatten layers.

(2) One of several levels in a communications protocol. See OSI.
References in periodicals archive ?
For example, when executing a plan involving a fuel system, the executive will monitor the plan and the system, determine when to initiate an action such as maintaining a given pressure, and then send those instructions to the functional layer.
In many thin film applications such as organic and printed electronics, biosensors and optical coatings, there is a growing demand for functional layers with highly homogeneous surface topology.
One can at least read on the exterior the functional layers - glazed reading spaces at the bottom, then the opaque yellow volume containing archives, then the glazed research spaces above that.
One-step processed coatings that separate into functional layers upon curing or drying can be regarded as a sustainable process that reduces hazardous materials emissions, conserves energy, and improves the economy of coating applications.
For example, while the operating frequency of the CFS increases with the number of functional layers [33], the operating frequency of the UFS reduces with the increasing number of functional layers.
The Germany based Leybold Optics provides production systems for vacuum deposition of functional layers for a range of applications.
Leybold Optics is one of the world's leading providers of production systems for vacuum deposition of functional layers for a wide range of applications.
In the multi-layer lines, the 75 mm extruders take care of plasticising the main layers with an output between 300 and 1,000 kg/h, while the 45 mm extruders produce the functional layers such as bonding adhesives and barrier materials, as well as surface covers and high-gloss finish.
By joining ePTFE with other functional layers, ePTFE integrates easily into various types of medical devices.
Extrusion Dies Industries, LLC (EDI), Chippewa Falls, Wisconsin USA, reports it has made an innovation in flat extrusion-die systems that makes it possible to multiply key functional layers in cast film and sheet, "substantially improving properties without increasing either overall thickness or raw material content.
C&S: One of the prime features of NGN is the separation of the different functional layers, and particularly the separation of the transport and service layers.

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