hydrogel

noun

hy·​dro·​gel ˈhī-drə-ˌjel How to pronounce hydrogel (audio)
: a gel composed usually of one or more polymers suspended in water

Examples of hydrogel 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.
The material is made from hydrogel, a water-rich, gel-like substance, and is produced using a technique the team describes as 4D printing. Neetika Walter, Interesting Engineering, 6 Feb. 2026 Perhaps most importantly, expansion microscopy is possible for any lab with a basic microscope and the hydrogel. Molly Herring, Quanta Magazine, 4 Feb. 2026 Just leave the hydrogel mask on for 20 minutes to experience an instant glow-up. Kiana Murden, Vogue, 12 Dec. 2025 Instead of a spool, the machine injects into a hydrogel. Charlotte Hu, Popular Science, 27 Nov. 2025 See All Example Sentences for hydrogel

Word History

First Known Use

1864, in the meaning defined above

Time Traveler
The first known use of hydrogel was in 1864

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Cite this Entry

“Hydrogel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogel. Accessed 11 Feb. 2026.

Medical Definition

hydrogel

noun
hy·​dro·​gel ˈhī-drə-ˌjel How to pronounce hydrogel (audio)
: a gel in which the liquid is water
a silicone hydrogel used to make soft contact lenses
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