Layer or layered may refer to:

Arts, entertainment, and media

* ''Layers'' (Kungs album) * ''Layers'' (Les McCann album) * ''Layers'' (Royce da 5'9" album) *"Layers", the title track of Royce da 5'9"'s sixth studio album * Layer, a female Maverick Hunter in the ''Mega Man X'' series *Layer, an element in a digital painting * ''Layer'' (film), a 2022 Russian film

Science

Stratum In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as ei ...

, 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 *Layer, an area in the

neocortex The neocortex, also called the neopallium, isocortex, or the six-layered cortex, is a set of layers of the mammalian cerebral cortex involved in higher-order brain functions such as sensory perception, cognition, generation of motor commands, sp ...

with specific structure and connection pattern among neurons

Technology

Computing

Layer (object-oriented design) In software object-oriented design, a layer is a group of classes that have the same set of link-time module dependencies to other modules. In other words, a layer is a group of reusable components that are reusable in similar circumstances ...

, a group of classes that have the same set of link-time module dependencies to other modules * Layers (digital image editing), used in digital image editing to separate different elements of an image * Layers, in

2D computer graphics 2D computer graphics is the computer-based generation of digital images—mostly from two-dimensional models (such as 2D geometric models, text, and digital images) and by techniques specific to them. It may refer to the branch of computer ...

Abstraction layer In computing, an abstraction layer or abstraction level is a way of hiding the working details of a subsystem. Examples of software models that use layers of abstraction include the OSI model for network protocols, OpenGL, and other graphics libra ...

, a way of hiding the implementation details of a particular set of functionality ** Internet protocol suite layers ** OSI model layers *

Layer element Layers were the core of a method of dynamic HTML programming specific to Netscape 4. Each layer was treated as a separate document object in JavaScript. The content could be included in the same file within the non-standard layer element (or any oth ...

, a deprecated <iframe>-like tag, unique to Netscape 4 browsers * Layer of objects, a term in CAD * Map layer, a set of graphical information, especially in

geographic information system A geographic information system (GIS) is a type of database containing Geographic data and information, geographic data (that is, descriptions of phenomena for which location is relevant), combined with Geographic information system software, sof ...

s * Layer (deep learning), a structure in the architecture of a deep learning model, which take information from the previous layers and then pass information to the next layer

Electronics

* Layer (electronics), a single thickness of some material covering a surface * Dual layer recording, a DVD layer *

F region The F region of the ionosphere is home to the F layer of ionization, also called the Appleton–Barnett layer, after the English physicist Edward Appleton and New Zealand physicist and meteorologist Miles Barnett. As with other ionospheric sectors ...

, or Appleton Layer in telecommunications

Other uses

* Layer, a tier of archaeological deposits in an

excavation Excavation may refer to: * Excavation (archaeology) * Excavation (medicine) * ''Excavation'' (The Haxan Cloak album), 2013 * ''Excavation'' (Ben Monder album), 2000 * ''Excavation'' (novel), a 2000 novel by James Rollins * '' Excavation: A Memo ...

* Layer hen, a hen raised to produce eggs * Layer cake, a cake consisting of stacked layers *

Layered, Inc. Layered, Inc., was an American software company based in Boston, Massachusetts. The company chiefly developed for Apple Inc., Apple's Macintosh computer. At the time of its acquisition in 1990 by Peachtree Accounting, Peachtree Software, of Norcro ...