layer

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(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.

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In Geographic Information Systems, a subset of non- spatial, digital map data, such as particulars of buildings.

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1. stratum; a sheetlike mass of tissue of nearly uniform thickness, several of which may be superimposed, one above the other, as in the epidermis.
2. a commercial fowl which is laying eggs, i.e. a female of more than about 5 months of age, up to the stage of being a ‘spent hen’ suitable only for slaughter.

• basal l. — 1. the deepest layer of the epidermis. See also stratum basale.
— 2. the deepest layer of the uterine mucosa.
• blastodermic l. — germ layer (see below).
• clear l. — stratum lucidum; the clear translucent layer of the epidermis, just beneath the horny layer.
• columnar l. — 1. layer of rods and cones.
— 2. mantle layer.
• compact l. — the layer of the endometrium nearest the surface, containing the necks of the uterine glands.
• functional l. — the compact and spongy layers of the endometrium considered together.
• cerebellar ganglionic l. — the thin middle gray layer of the cortex of the cerebellum, consisting of a single layer of Purkinje cells.
• germ l. — any of the three primary layers of cells formed in the early development of the embryo (ectoderm, entoderm and mesoderm), from which the organs and tissues develop.
• germinative l. — any proliferative layer such as the basal layer of the epidermis or the lower layer of the claw, from which the claw grows.
• granular l. — 1. the layer of epidermis between the clear and prickle-cell layers; called also stratum granulosum.
— 2. the deep layer of the cortex of the cerebellum. — 3. the layer of follicle cells lining the theca of the vesicular ovarian follicle.
• horny l. — 1. stratum corneum; the outermost layer of the epidermis, consisting of dead and desquamating cells.
— 2. the outer, compact layer of the claw, etc.
• keratohyaline l. — granular layer (1).
• mantle l. — the middle layer of the wall of the primitive neural tube, containing primitive nerve cells and later forming the gray matter of the central nervous system.
• nervous l. — all of the retina except the pigment layer; the inner layer of the optic cup.
• prickle-cell l. — stratum spinosum; the layer of the epidermis between the granular and basal layers, marked by the presence of prickle cells.
• l. of rods and cones — a layer of the retina immediately beneath the pigment epithelium, between it and the external limiting membrane, containing the rods and cones.
• spinous l. — prickle-cell layer.
• spongy l. — the middle layer of the endometrium, containing the tortuous portions of the uterine glands.
• subendocardial l. — the layer of loose fibrous tissue uniting the endocardium and myocardium.
• zonal l. of thalamus — a layer of myelinated fibers covering the dorsal surface of the thalamus.

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)

Contents 1 Places 2 Fiction 3 Science 4 Computing and technology

Places

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

Fiction

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

Science

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

Computing and technology

• 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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Dansk (Danish)
n. - lægger, æglægger, lag, leje
v. tr. - aflægge, formere ved aflægning, nedkroge
v. intr. - aflægge, formere ved aflægning, nedkroge

idioms:

• layer of the atmosphere    lag i atmosfæren

Nederlands (Dutch)
aardlaag, laag, legkip, aflegger (botanie), in lagen aanbrengen, afleggen, (zich) in lagen splitsen, wortel schieten na afleggen (botanie)

Français (French)
n. - couche, pondeuse, (Hort) marcottage
v. tr. - (Hort) marcotter, couper (qch) en dégradé, disposer (qch) en couches
v. intr. - se former en couches, s'enraciner (des brindilles, des branches)

idioms:

• layer of the atmosphere    couche atmosphérique

Deutsch (German)
n. - Schicht, Ableger, Legehenne
v. - in Schichten anordnen

idioms:

• layer of the atmosphere    Luftschicht

Ελληνική (Greek)
n. - στρώμα, στρώση, διάστρωση, καταβολάδα, καταμόσχευμα
v. - τακτοποιώ/τοποθετώ κατά στρώματα

idioms:

• layer of the atmosphere    ατμοσφαιρικό στρώμα

Italiano (Italian)
strato, gallina da uova, pellicola

Português (Portuguese)
n. - camada (f), demão (f)
v. - mergulhar, estender em camadas

Русский (Russian)
слой, несушка, укладчик, наслаивать

Español (Spanish)
n. - capa, estrato, revestimiento, gallina ponedora, película, cubierta
v. tr. - cubrir de una capa, acodar
v. intr. - acamarse (las mieses)

idioms:

• layer of the atmosphere    capa de la atmósfera

Svenska (Swedish)
n. - lager, skikt, varv, (bot.) avläggare, liggsäd, barkkar, kar med garvämne, läggare, värphöna, vadhållare
v. - föröka sig genom avläggare, föröka genom avläggare

中文（简体）(Chinese (Simplified))
层, 地层, 阶层, 铺设者, 分层堆积, 压植, 以压条法繁殖

idioms:

• layer of the atmosphere    大气层

中文（繁體）(Chinese (Traditional))
n. - 層, 地層, 階層, 鋪設者
v. tr. - 分層堆積, 壓植
v. intr. - 以壓條法繁殖

idioms:

• layer of the atmosphere    大氣層

한국어 (Korean)
n. - 지층, 계층 , 놓는 사람[것], 알 낳는 닭, 제삭기
v. tr. - ~을 층지게 하다, 삽입하다, 휘묻이 하다
v. intr. - 층을 이루다 , 휘묻이로 번식하다

日本語 (Japanese)
n. - 層, 一重ね, 置く人, 取り木, 卵を生む鶏
v. - 幾重にも重ねる, 取り木する

idioms:

• layer of the atmosphere    大気圏

العربيه (Arabic)
‏(الاسم) فاعل Lay , مثل مركب القرميد على السطح, الدجاجه التي تضع بيضا, طبقه من الدهان أو الجص أو الطين ألخ, الغصين المرقد بالنبته الأم, النبته المرقدة (فعل) يرقد النبات, ينفصل إلى طبقات‏

עברית (Hebrew)
n. - ‮רובד, שיכבה, ענף מוברך, מטילה (תרנגולת), ענף עץ שנכפף ונשתל כדי שיכה שורש‬
v. tr. - ‮יצר שיכבה, סידר בשכבות, הבריך ענף‬
v. intr. - ‮יצר שיכבה, סידר רבדים-רבדים‬