Layer may refer to:

Look up layer or layers in Wiktionary, the free dictionary.

• A layer of archaeological deposits in an Excavation
• A layer hen, a hen raised to produce eggs
• Stratum, a layer of rock or soil with internally consistent characteristics
• Thermocline, a layer within a body of water where the temperature changes rapidly with depth
• Layering, a technique for plant propagation
• Layered hair, a popular hair-styling technique
• Layering (clothing), the wearing of multiple layers of clothing for practical or fashion purposes
• Layering may also refer to the money laundering crimes, that usually occur in 3 stages: placement (when the dirty money is separated from the former criminal activity), layering (the act of giving an appearance of legal to the values) and integration (when the money is formally incorporated to the economic system)

Places[link]

• Layer de la Haye is a village in Essex, England

Fiction[link]

• Layer, a female Maverick Hunter in the Mega Man X series

Science[link]

• Layer (electronics), a single thickness of some material covering a surface
• Appleton Layer, or F Layer (telecommunications)

Computing and technology[link]

• Abstraction layer, a way of hiding the implementation details of a particular set of functionality
  • OSI model layers
  • Internet protocol suite layers
• 2D computer graphics#Layers, layers in 2D computer graphics
• Layers (digital image editing), used in digital image editing to separate different elements of an image
• map layer: a set of graphical information, especially in geographic information systems
• layer (object-oriented design), a group of classes that have the same set of link-time module dependencies to other modules
• DVD layer, such as in DVD Dual layer recording
• Layer (HTML tag) a deprecated <iframe>-like tag, unique to Netscape 4 browsers
• A layer of objects in CAD

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