terephthalate

noun

tere·​phthal·​ate ˌter-ə(f)-ˈtha-ˌlāt How to pronounce terephthalate (audio)
: a salt or ester of terephthalic acid
especially : a dimethyl-ester that is a major starting material for polyester fibers and coatings

Examples of terephthalate in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Single-use plastic bottles are made of a thin plastic known as polyethylene terephthalate, or PET. The Washington Post, San Diego Union-Tribune, 23 Sep. 2025 Plastics were primarily polyester and polyethylene terephthalate, while non-plastics included rayon and cotton, materials known to commonly shed during laundry wash cycles and be carried out to our big, blue ocean through the numerous river systems covering our planet. Melissa Cristina Márquez, Forbes.com, 4 Sep. 2025 Many single-use plastic water bottles are made from a type of plastic called polyethylene terephthalate (PET). Deirdre Bardolf, FOXNews.com, 6 Aug. 2025 Over 50% of the follicular fluid samples contained polyamide (PA), polyurethane (PU) and polyethylene (PE), while polytetrafluoroethylene (PTFE) and polyethylene terephthalate (PET) were discovered in over 30% of the follicular fluid samples. Kristen Rogers, CNN Money, 1 July 2025 See All Example Sentences for terephthalate

Word History

First Known Use

1868, in the meaning defined above

Time Traveler
The first known use of terephthalate was in 1868

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Cite this Entry

“Terephthalate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terephthalate. Accessed 29 Oct. 2025.

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