Meaning of “layer” in the English Dictionary

"layer" in British English

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layernoun [ C ]

uk /ˈleɪ.ər/ us /ˈleɪ.ɚ/

layer noun [ C ] (MATERIAL)

B2 a level of material, such as a type of rock or gas, that is different from the material above or below it, or a thin sheet of a substance:

the ozone layer
A thick layer of clay lies over the sandstone.
There was a thin layer of oil on the surface of the water.
We stripped several layers of paint off the door.

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layerverb [ T ]

uk /ˈleɪ.ər/ us /ˈleɪ.ɚ/
layered
adjective uk /ˈleɪ.əd/ us /ˈleɪ.ɚd/

Her hair is long and fluffily layered.

(Definition of “layer” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"layer" in American English

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layernoun [ C ]

us /ˈleɪ·ər/

a thin sheet of a substance on top of a surface, or a level of material that is different from the material on either side:

We put on two layers of paint.
The road was built up with layers of crushed stone and asphalt.
layered
adjective /ˈleɪ·ərd/

Her hair is long and fluffily layered.

layerverb [ T ]

/ˈleɪ·ər/

to arrange something in layers:

Layer the pasta with slices of tomato.

(Definition of “layer” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"layer" in Business English

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layernoun [ C ]

uk /leɪər/ us

HR the group of employees or managers at a particular level of responsibility in an organization:

layer of bureaucracy/management She argued that a joint governing board was a needless layer of bureaucracy.
We've cut the number of management layers from five to three.

a thin sheet of a substance on top of a surface, or a level of material that is different from the material on either side:

layer of paint/soil/plastic, etc. The case was made of layers of plastic, paint, and titanium.
a protective/waterproof/insulating layer

one of several related ways of thinking or doing something:

a layer of complexity/meaning

See also

(Definition of “layer” from the Cambridge Business English Dictionary © Cambridge University Press)