hydrogen bond

noun

Definition of hydrogen bond

: an electrostatic attraction between a hydrogen atom in one polar molecule (as of water) and a small electronegative atom (as of oxygen, nitrogen, or fluorine) in usually another molecule of the same or a different polar substance

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Inside the gel, a layer of water molecules bonded tightly to the PVA, each forming multiple chemical links known as hydrogen bonds. — Robert F. Service, Science | AAAS, "New solar technology could produce clean drinking water for millions in need," 28 June 2019 At that temperature, the hydrogen bonds in the hair will break then reform in the shape of the curls. — Jessica Cruel, SELF, "12 Common Curling Iron Mistakes and How to Stop Making Them," 8 June 2018 Hair consists of keratin, a protein that is wound into a coil held together by hydrogen bonds. — Tom Skilling, chicagotribune.com, "Ask Tom: Why does humid weather affect hair?," 4 May 2018 These channels and cell walls collapse during the heat-and-squeeze part of the researchers' process and new hydrogen bonds form between cellulose molecules, toughening the material. — Marissa Fessenden, Smithsonian, "New Super Wood Beats Metals in Feats of Strength," 10 Feb. 2018 The hydrogen bonds form in a such a way that the polymer doesn't crystallize, giving the molecular chains the ability to move freely, and easily combine when pieces of the substance are compressed. — Andrew Wagner, Science | AAAS, "This new material heals—not cracks—under pressure," 14 Dec. 2017

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