hard·​en·​er | \ ˈhärd-nər How to pronounce hardener (audio) , ˈhär-dᵊn-ər \

Definition of hardener

: one that hardens especially : a substance added (as to a paint or varnish) to harden the film

Examples of hardener in a Sentence

Recent Examples on the Web Start with a two-part clear resin kit ($18, Michaels) that includes one bottle of resin and one bottle of hardener. Emily Vanschmus, Better Homes & Gardens, "How to Make Colorful Resin Coasters with Dried Flowers," 22 Apr. 2021 Pour one part resin in one cup, one part hardener in another cup. Emily Vanschmus, Better Homes & Gardens, "How to Make Colorful Resin Hair Clips," 14 Apr. 2021 Formaldehyde This substance is used in nail polish and nail hardener. Dina Fine Maron, Scientific American, "These 4 Chemicals May Pose the Most Risk for Nail Salon Workers," 12 May 2015 One combination of products is Bondo Wood Restorer as the hardener (eight ounces for $18.97 at Home Depot) and Bondo Wood Filler, a two-part polyester formula (12 ounces for $13.68). Jeanne Huber, Washington Post, "How to fix a water-damaged bathroom windowsill," 30 Sep. 2019 Brush on wood hardener to solidify spongy wood fibers, creating a firm base. Jeanne Huber, Washington Post, "How to fix a water-damaged bathroom windowsill," 30 Sep. 2019 Wade took some, mixed it with hardener, applied it to his car, sanded it down and applied primer paint. San Diego Union-Tribune, "Someone San Diego Should Know: Alberto Pulido," 29 July 2019 According to the Mayo Clinic, this can happen after an injury, infection, or even as the result of using certain nail hardeners. Macaela Mackenzie, Allure, "This Woman's Toenails Fell Off After Getting a "Fish Pedicure"," 6 July 2018 Almost always comes with a tube of hardener; if not, see below. Ben Wojdyla, Popular Mechanics, "How to Fix Your Car's Dents and Dings," 21 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hardener.' 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 hardener

1598, in the meaning defined above

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Time Traveler for hardener

Time Traveler

The first known use of hardener was in 1598

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Statistics for hardener

Last Updated

6 May 2021

Cite this Entry

“Hardener.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hardener. Accessed 18 May. 2021.

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