mylar
UK[ˈmaɪlɑː]US[ˈmaɪlɑːr]
n
A type of strong, thin polyester film, often used in insulation, packaging, and as a reflective material.
Etymology
The word 'Mylar' is a proprietary trademark, not a word formed from classical morphemes. It was coined and registered as a brand name for biaxially oriented polyethylene terephthalate (BoPET) film by the DuPont company. The name was created for its commercial appeal, likely designed to sound modern, technical, and distinctive, without a direct semantic link to ancient roots. As the product became ubiquitous, 'Mylar' entered common usage as a genericized trademark to refer to any similar shiny, metallic-looking polyester film, demonstrating how brand names can evolve into standard vocabulary.
Analysis
N/A
Examples
The balloons were made of thin, reflective Mylar.
She used a sheet of Mylar as an emergency space blanket.
The circuit board was protected by a layer of Mylar insulation.