| 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 |
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 |
oxidation
oxidization
oxidisation | the process of oxidizing, the addition of oxygen to a compound with a loss of electrons, always occurs accompanied by reduction |
oxidation number
oxidation state | the degree of oxidation of an atom or ion or molecule, for simple atoms or ions the oxidation number is equal to the ionic charge, the oxidation number of hydrogen isand of oxygen is - |
| layer | make or form a layer, layer the different colored sands |