hy·​dro·​gel | \ ˈhī-drə-ˌjel How to pronounce hydrogel (audio) \

Definition of hydrogel

: a gel composed usually of one or more polymers suspended in water

Examples of hydrogel in a Sentence

Recent Examples on the Web

Chitosan penetrates both the skin and the hydrogel, linking them, whereas other bonding agents fuse them together with even more sticking power. Eva Frederick, Science | AAAS, "This embryo-inspired bandage is 17 times stickier than a Band-Aid," 24 July 2019 Some contact lens fitters and industry experts say that the hydrogel material used by Hubble is outdated and could cause particular discomfort for lens wearers with dry or sensitive eyes. Sapna Maheshwari, New York Times, "Start-Up Says It’s Changing Eye Care for the Better. Others See It Differently.," 21 July 2019 While it hasn't been tested on humans yet, the hydrogel adhesive has done phenomenally well in testing on pig hearts, which share many similarities with human hearts, like two atriums and two ventricles. David Grossman, Popular Mechanics, "New Bio Glue Stops Post-Traumatic Bleeding in Its Tracks," 14 May 2019 In this backwards version, a large-scale object is placed within a hydrogel (the more absorbent the better). David Grossman, Popular Mechanics, "Honey, I Shrunk Everything: MIT Scientists Can Shrink Objects to the Nanoscale," 18 Dec. 2018 Well, the brain tissue expansion process embeds tissue into a hydrogel and then expands it, which allows for high resolution imaging with a regular microscope. David Grossman, Popular Mechanics, "Honey, I Shrunk Everything: MIT Scientists Can Shrink Objects to the Nanoscale," 18 Dec. 2018 Shikanov and several researchers in the field are currently crafting artificial ovaries with synthetic polymers and hydrogels, which may afford more precise control over the mechanical properties of the scaffold. Katherine J. Wu, Smithsonian, "How Artificial Ovaries Could Expand Fertility Options For Chemo Patients," 5 July 2018 In initial tests of the hydrogel-containing prototype, Omenetto and his team had undergraduate researcher Logan Garbarini and other volunteers attach it to their teeth. Beth Mole, Ars Technica, "Sticking to your diet? This tooth-mounted food sensor could transmit the truth," 24 Mar. 2018 The hydrogel used by the Italian researchers was between 95 and 98 percent water. National Geographic, "Tape Is Ruining Priceless Art. This New Gel Can Fix It.," 23 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrogel.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hydrogel

1864, in the meaning defined above

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Last Updated

30 Jul 2019

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Time Traveler for hydrogel

The first known use of hydrogel was in 1864

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hy·​dro·​gel | \ ˈhī-drə-ˌjel How to pronounce hydrogel (audio) \

Medical Definition of hydrogel

: a gel in which the liquid is water a silicone hydrogel used to make soft contact lenses

Comments on hydrogel

What made you want to look up hydrogel? Please tell us where you read or heard it (including the quote, if possible).


a haphazard or makeshift solution

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