What does delaminating mean?
To be delaminating is to be coming apart into the separate layers from which something was built. The verb 'delaminate' applies chiefly to engineered materials — plywood, laminated glass, carbon-fibre composites, printed circuit boards, honeycomb panels — where sheets or plies are bonded together with adhesive, heat, or pressure. When moisture, heat, impact, or manufacturing defects weaken those bonds, the material begins to separate along them, and inspectors describe it as delaminating. The word is largely technical in register, appearing most often in engineering reports, building surveys, product recalls, and maintenance manuals, though it can also be applied loosely to peeling paint, flaking veneer, or failing coatings. It carries a strongly negative connotation: delamination usually signals structural weakness, reduced performance, or imminent failure, which is why detecting it early matters so much in aerospace, marine, and construction contexts. Derived from Latin 'lamina', meaning a thin plate or layer, it is the inverse of 'laminating', which describes bonding layers together in the first place.
To split into layers, or to come apart along the bonded layers of which a material is composed.
"The technician noticed the composite panel was delaminating near the fastener holes."
Used both transitively (moisture can delaminate plywood) and intransitively (the deck began delaminating).
The process or phenomenon of a layered material separating into its constituent layers.
"Early detection of delaminating is critical to preventing catastrophic composite failure."
From the Latin 'lamina', meaning a thin layer or plate — the same root behind 'lamellate' in biology — delaminating is the word engineers dread when composite aircraft panels or honeycomb structures begin to fail.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of delaminating
The word derives from the verb 'delaminate', formed from the prefix 'de-' (indicating reversal or removal) plus 'laminate', which traces back to the Latin noun 'lamina', meaning a thin plate, layer, or sheet. The root is shared with 'lamellation' in biology and related terms such as 'lamella'. The compound form arose in technical English, likely in the late nineteenth or twentieth century as layered manufactured materials became widespread, and it remains firmly associated with materials science and structural inspection.
Related word forms
How delaminating is actually used
Primarily a technical term used in engineering, construction, materials science, and manufacturing; it is rare in everyday speech outside discussions of damaged materials such as plywood, laminated glass, printed circuit boards, or sports equipment. It carries an implicitly negative connotation, signalling structural failure or deterioration.
Easily confused with delaminating
'Laminating' means bonding layers together, while 'delaminating' means the reverse — the layers splitting apart.