layer | thin structure composed of a single thickness of cells |
germ layer | (embryology) any of the layers of cells differentiated in embryos following gastrulation |
layer | a hen that lays eggs |
layer bed | single thickness of usually some homogeneous substance, slices of hard-boiled egg on a bed of spinach |
nitrous oxide laughing gas | inhalation anesthetic used as an anesthetic in dentistry and surgery |
stratum corneum corneum horny layer | the outermost layer of the epidermis consisting of dead cells that slough off |
stratum germinativum stratum basale malpighian layer rete Malpighii | the innermost layer of the epidermis |
bulbar conjunctiva conjunctival layer of bulb tunica conjunctiva bulbi | the part of the conjunctiva covering the anterior face of the sclera and the surface epithelium of the cornea |
palpebra conjunctiva conjunctival layer of eyelids tunica conjunctiva palpebrarum | the part of the conjunctiva lining the posterior surface of the eyelids, continuous with the bulbar conjunctiva |
membrane tissue layer | a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants |
level layer stratum | 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 |
layer cake | cake having layers held together by a sweet filling and usually covered with frosting |
D-layer D region | the lowest region of the ionosphere ( tomiles up) that reflects low-frequency radio waves |
Appleton layer F layer F region | the highest region of the ionosphere (fromto miles up) which contains the highest concentration of free electrons and is most useful for longange radio transmission |
Heaviside layer Kennelly-Heaviside layer E layer E region | a region of the ionosphere (fromtomiles up) that reflects radio waves of medium length |
layer | a relatively thin sheetlike expanse or region lying over or under another |
ozone layer ozonosphere | a layer in the stratosphere (at approximatelymiles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun |
boundary layer | the layer of slower flow of a fluid past a surface |
titanium dioxide titanium oxide titanic oxide titania | a white powder used as a pigment for its high covering power and durability |
barium monoxide barium oxide barium protoxide | an oxide of barium, a whitish toxic powder |
periclase magnesia magnesium oxide | a white solid mineral that occurs naturally as periclase, a source of magnesium |
heavy water deuterium oxide | water containing a substantial proportion of deuterium atoms, used in nuclear reactors |
nitrogen oxide | any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials, present in car exhausts |
nitric oxide | a poisonous red-brown gas (NO) |
arsenic arsenic trioxide arsenous anhydride arsenous oxide white arsenic ratsbane | a white powdered poisonous trioxide of arsenic, used in manufacturing glass and as a pesticide (rat poison) and weed killer |
calcium oxide quicklime lime calx calcined lime fluxing lime unslaked lime burnt lime | a white crystalline oxide used in the production of calcium hydroxide |
copper oxide | an oxide of copper |
alumina aluminum oxide aluminium oxide | any of various forms of aluminum oxide occurring naturally as corundum |
aluminum hydroxide aluminium hydroxide hydrated aluminum oxide hydrated aluminium oxide | white crystalline compound that occurs naturally as the mineral gibbsite |
ferric oxide | a red oxide of iron |
hydroxide hydrated oxide | a compound of an oxide with water |
oxide | any compound of oxygen with another element or a radical |
silica silicon oxide silicon dioxide | a white or colorless vitreous insoluble solid (SiO), various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite |
sulfur oxide sulphur oxide | any of several oxides of sulphur |
zinc oxide flowers of zinc philosopher's wool philosophers' wool | oxide of zinc, a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment |
zirconium oxide zirconia zirconium dioxide | a white crystalline oxide, used in refractories and in insulation and abrasives and enamels and glazes |
layer | make or form a layer, layer the different colored sands |