Layer Definition

Define what is Layer?

1. layer, bed (noun)

single thickness of usually some homogeneous substance.

  • slices of hard-boiled egg on a bed of spinach.
Synonyms: bed

artefact, artifact noun
a man-made object taken as a whole.


backing, mount noun
something forming a back that is added for strengthening.

blanket noun
a layer of lead surrounding the highly reactive core of a nuclear reactor.

row, course noun
(construction) a layer of masonry.

cushion noun
the layer of air that supports a hovercraft or similar vehicle.

interlayer noun
a layer placed between other layers.

lift noun
one of the layers forming the heel of a shoe or boot.

overlay noun
a layer of decorative material (such as gold leaf or wood veneer) applied over a surface.

ply noun
(usually in combinations) one of several layers of cloth or paper or wood as in plywood.

tier noun
one of two or more layers one atop another.

wall noun
a layer of material that encloses space.

2. layer (verb)

make or form a layer.

  • layer the different colored sands.

SHAPE, mould, mold, form, forge, work verb
make something, usually for a specific function.

3. layer (noun)

a relatively thin sheetlike expanse or region lying over or under another.


    region, part noun
    the extended spatial location of something.


    stratum noun
    one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock).

    asthenosphere noun
    the lower layer of the crust.

    chromosphere noun
    a gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun.

    crust, Earth's crust noun
    the outer layer of the Earth.

    exosphere noun
    the outermost atmospheric layer.

    hydrosphere noun
    the watery layer of the earth's surface; includes water vapor.

    geosphere, lithosphere noun
    the solid part of the earth consisting of the crust and outer mantle.

    lower mantle noun
    the deeper part of the mantle.

    Mantle noun
    the layer of the earth between the crust and the core.

    mesosphere noun
    the atmospheric layer between the stratosphere and the thermosphere.

    ozone layer, ozonosphere noun
    a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun.

    stratosphere noun
    the atmospheric layer between the troposphere and the mesosphere.

    Earth's surface, surface noun
    the outermost level of the land or sea.

    thermosphere noun
    the atmospheric layer between the mesosphere and the exosphere.

    tropopause noun
    the region of discontinuity between the troposphere and the stratosphere.

    troposphere noun
    the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude).

    upper mantle noun
    the upper part of the mantle.

    cell wall noun
    a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier.

    Snow noun
    a layer of snowflakes (white crystals of frozen water) covering the ground.

    4. layer, stratum, level (noun)

    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.
    Synonyms: stratum, level

    place noun
    an abstract mental location.

    5. layer (noun)

    a hen that lays eggs.


      biddy, hen noun
      adult female chicken.

      6. layer (noun)

      thin structure composed of a single thickness of cells.


        anatomical structure, bodily structure, body structure, complex body part, structure noun
        a particular complex anatomical part of a living thing.


        blastoderm, blastodisc, germinal area, germinal disc noun
        a layer of cells on the inside of the blastula.

        hypodermis noun
        layer of cells that secretes the chitinous cuticle in e.g. arthropods.

        Nearby Terms

        layer cake (noun)
        cake having layers held together by a sweet filling and usually covered with frosting

        layered (adjective satellite)
        with one layer on top of another

        layette (noun)
        kit consisting of a complete outfit (clothing and accessories) for a new baby

        Layia (noun)
        genus of western United States annuals with showy yellow or white flowers

        Layia platyglossa (noun)
        California annual having flower heads with yellow rays tipped with white

        laying (noun)
        the production of eggs (especially in birds)

        laying claim (noun)
        the act of taking possession of or power over something

        laying on (noun)
        the act of contacting something with your hand

        laying on of hands (noun)
        the application of a faith healer's hands to the patient's body

        laying waste (noun)
        destruction achieved by causing something to be wrecked or ruined

        layman (noun)
        someone who is not a clergyman or a professional person

        layoff (noun)
        the act of laying off an employee or a work force

        layout (noun)
        a plan or design of something that is laid out

        layover (noun)
        a brief stay in the course of a journey

        layperson (noun)
        someone who is not a clergyman or a professional person