layer

something forming a back that is added for strengthening

a layer of lead surrounding the highly reactive core of a nuclear reactor

(construction) a layer of masonry

a course of some impermeable material laid in the foundation walls of building near the ground to prevent dampness from rising into the building

a course of bricks place next to each other (usually in a straight line)

the layer of air that supports a hovercraft or similar vehicle

a layer placed between other layers

one of the layers forming the heel of a shoe or boot

the bottom layer of a heel

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

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

one of two or more layers one atop another

a layer of material that encloses space

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)

the outer layer of the skin covering the exterior body surface of vertebrates

the outermost layer of the epidermis consisting of dead cells that slough off

the layer of epidermis immediately under the stratum corneum in the skin of the palms and soles

the layer of epidermis just under the stratum corneum or (on the palms and soles) just under the stratum lucidum; contains cells (with visible granules) that die and move to the surface

the innermost layer of the epidermis

the deep vascular inner layer of the skin

the inner layer of the periosteum

(anatomy) a layer (a lining or membrane) that encloses a structure

any stratum or layer lying underneath another

any stratum or layer superimposed on another

a specific layer or stratum of soil or subsoil in a vertical cross section of land

a stratum of ore or coal thick enough to be mined with profit

(geology) a stratum of rock (especially sedimentary rock)

the lower layer of the crust

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

the outer layer of the Earth

a ridge of the earth's crust that has been forced upward between two faults and so is higher than the surrounding land

a rigid layer of the Earth's crust that is believed to drift slowly

the outermost atmospheric layer

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

the solid part of the earth consisting of the crust and outer mantle

the deeper part of the mantle

the layer of the earth between the crust and the core

the atmospheric layer between the stratosphere and the thermosphere

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

the atmospheric layer between the troposphere and the mesosphere

the outermost level of the land or sea

the bottom surface of any lake or other body of water

the lower inside surface of any hollow structure

the atmospheric layer between the mesosphere and the exosphere

the region of discontinuity between the troposphere and the stratosphere

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

the upper part of the mantle

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

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

granular snow formed by alternate thawing and freezing

heavy wet snow that is unsuitable for skiing