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4 definitions found
 for layer
From The Collaborative International Dictionary of English v.0.48 :

  Layer \Lay"er\, n. [See Lay to cause to lie flat.]
     1. One who, or that which, lays.
        [1913 Webster]
     2. [Prob. a corruption of lair.] That which is laid; a
        stratum; a bed; one thickness, course, or fold laid over
        another; as, a layer of clay or of sand in the earth; a
        layer of bricks, or of plaster; the layers of an onion.
        [1913 Webster]
     3. A shoot or twig of a plant, not detached from the stock,
        laid under ground for growth or propagation.
        [1913 Webster]
     4. An artificial oyster bed.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: single thickness of usually some homogeneous substance;
           "slices of hard-boiled egg on a bed of spinach" [syn:
           layer, bed]
      2: a relatively thin sheetlike expanse or region lying over or
         under another
      3: an abstract place usually conceived as having depth; "a good
         actor communicates on several levels"; "a simile has at least
         two layers of meaning"; "the mind functions on many strata
         simultaneously" [syn: level, layer, stratum]
      4: a hen that lays eggs
      5: thin structure composed of a single thickness of cells
      v 1: make or form a layer; "layer the different colored sands"

From Moby Thesaurus II by Grady Ward, 1.0 :

  28 Moby Thesaurus words for "layer":
     Appleton layer, F layer, Heaviside-Kennelly layer, Van Allen belt,
     arrange in layers, belt, bookie, chemosphere, delaminate,
     desquamate, exfoliate, flake, ionosphere, isothermal region,
     laminate, lay down, lay up, lower atmosphere, outer atmosphere,
     photosphere, scale, stratify, stratosphere, stratum,
     substratosphere, tropopause, troposphere, upper atmosphere

From The Free On-line Dictionary of Computing (30 December 2018) :

  protocol layer
      The software and/or hardware environment of
     two or more communications devices or computers in which a
     particular network protocol operates.  A network
     connection may be thought of as a set of more or less
     independent protocols, each in a different layer or level.
     The lowest layer governs direct host-to-host communication
     between the hardware at different hosts; the highest consists
     of user application programs.  Each layer uses the layer
     beneath it and provides a service for the layer above.  Each
     networking component hardware or software on one host uses
     protocols appropriate to its layer to communicate with the
     corresponding component (its "peer") on another host.  Such
     layered protocols are sometimes known as peer-to-peer
     The advantages of layered protocols is that the methods of
     passing information from one layer to another are specified
     clearly as part of the protocol suite, and changes within a
     protocol layer are prevented from affecting the other layers.
     This greatly simplifies the task of designing and maintaining
     communication systems.
     Examples of layered protocols are TCP/IP's five layer
     protocol stack and the OSI seven layer model.

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