- a brand of strong, thin polyester film used in photography, recording tapes, and insulation.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mylar
Then again, if the men were actually naked, would you be able to spell out ‘Robin Thicke has a big dick’ in Mylar balloons?‘Blurred Lines,’ Robin Thicke’s Summer Anthem, Is Kind of Rapey
June 17, 2013
Word Origin and History for mylar
proper name for a polyester film, 1954, trademarked by E.I. Du Pont de Nemours and Co., Wilmington, Delaware, U.S.A. Like many Du Pont names, it doesn't mean anything, they just liked the sound.
Online Etymology Dictionary, © 2010 Douglas Harper