Mylar

//ˈmaɪlɑɹ// name, noun

name, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A polyester film. countable, uncountable

    "The heavy use causes the mylars to develop extensive local warping […]"

  2. 2
    a thin polyester film wordnet
Proper Noun
  1. 1
    Alternative letter-case form of mylar, especially when used in its non-genericized form. alt-of, uncountable

Synonyms

All synonyms
acrylicbopetbopetplastic

Example

More examples

"Instead of canvas, solar sails are made of thin sheets of Mylar, the same crinkly silver material often used for helium-filled balloons."

Etymology

Etymology 1

From a trademark.

Etymology 2

No meaning. Chosen by Du Pont based on euphony.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.