polyethylene glycol

noun

: any of a series of polymers H(OCH2CH2)nOH where n is greater than three that vary from viscous liquids to waxy solids and are used especially as lubricants and in medical and biotechnological applications
abbreviation PEG

Examples of polyethylene glycol in a Sentence

Recent Examples on the Web
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To preserve the ship after she was gently lifted from the water with large pontoon boats, she was sprayed continuously with polyethylene glycol for 17 years, then allowed to dry very slowly until around 2011. Jess Fleming, Twin Cities, 3 Aug. 2025 To increase the polymer’s conductivity and self-healing properties, the research team used additives including polyethylene glycol and glycol, which helped increase conductivity as well as the material’s ability to automatically repair damage such as cuts or tears. IEEE Spectrum, 24 Sep. 2024 Those particles were then suspended within a biocompatible liquid blend of gelatin methacrylate and polyethylene glycol diacrylate. Ben Coxworth may 26, New Atlas, 26 May 2025 It was treated with polyethylene glycol (PEG) which, as a petroleum product introduces very old (dead) carbon and thus distorts (makes dates far too old) radiocarbon dating, the professor told IE. Shubhangi Dua, Interesting Engineering, 26 June 2024 See All Example Sentences for polyethylene glycol

Word History

First Known Use

1886, in the meaning defined above

Time Traveler
The first known use of polyethylene glycol was in 1886

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Cite this Entry

“Polyethylene glycol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyethylene%20glycol. Accessed 19 Aug. 2025.

Medical Definition

polyethylene glycol

noun
: any of a series of polymers H(OCH2CH2)nOH where n is greater than three that vary from viscous liquids to white solids and are used in medicine especially as laxatives and as bases for pharmaceutical ointments and cosmetic creams
abbreviation PEG

Note: The covalent attachment of polyethylene glycol chains to biomolecules (see pegylation) is used especially to improve the bioavailability, solubility, and stability of therapeutic agents and to reduce their immunogenicity.

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