What does interlayer mean?
An interlayer is a layer positioned between two other layers, or more generally a material or structure used as such an intermediate layer. In composites, electronics, manufacturing, and printing, it may separate, cushion, insulate, bond, or otherwise modify the layers around it. The verb interlayer means to place something between or among layers and is especially common in manufacturing and printing descriptions. Although the word sounds technical, its meaning is deliberately literal and straightforward: an interlayer does the intervening. It is useful in precise technical writing because it names both the intermediate layer and, when used as a verb, the action of inserting it. The term is less common in general conversation than in specialist and instructional contexts, where its compactness and precision are valuable.
A layer, material, or structure situated between two other layers.
"The composite includes a resilient interlayer that absorbs impact between the outer panels."
Often used attributively in technical descriptions, as in interlayer material or interlayer insulation.
To place something between or among layers.
"The laminating process interlayers a sheet of fiberglass between the outer skins."
Used chiefly in manufacturing, printing, engineering, and related technical contexts.
The plural interlayers is used when separate intermediate layers are being counted.
"Several thin interlayers separate the conductive sheets."
An interlayer is literally a “layer between layers”—a compact term for the middle that can insulate, separate, connect, or otherwise affect what surrounds it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of interlayer
Interlayer is an English compound formed from inter- and layer. The prefix inter- comes from Latin inter, meaning “between,” while layer comes through Middle English from Old French and is related to lay. Compounds such as overlay and underlay show the same productive use of layer; interlayer specifically denotes a layer placed between other layers.
Related word forms
How interlayer is actually used
The word is chiefly used in specialist and instructional contexts, including composites, electronics, manufacturing, and printing. It is uncommon in general conversation but precise when describing an intermediate layer or the act of inserting one.
Easily confused with interlayer
An interlayer is any layer or intermediate structure, whereas an interleaf is specifically a leaf or sheet inserted between pages.