wetting agent

noun

: a substance that by becoming adsorbed prevents a surface from being repellent to a wetting liquid and is used especially in mixing solids with liquids or spreading liquids on surfaces

Examples of wetting agent in a Sentence

Recent Examples on the Web
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Some soils resist water penetration; try a wetting agent to help moisten the soil. Tom MacCubbin, The Orlando Sentinel, 30 May 2026 Follow this immediately with a natural wetting agent, such as yucca extract or yucca meal, to break the water's surface tension and force moisture deep into the dry fungal mat. Sj McShane, Martha Stewart, 27 May 2026 How To Improve Your Soil's Moisture Retention A short-term solution for small areas or containers with hydrophobic soil is a commercial wetting agent, often called water retainers or penetrants. Mary Marlowe Leverette, Southern Living, 23 Apr. 2026 Don’t reuse contact lens solution that’s been sitting in your case; clean the case with fresh solution at least once a week and leave it open to air dry; and never use tap water or saliva as a wetting agent. Holly Burns, Time, 23 Oct. 2025 Miracle-Gro Houseplant Potting Mix contains perlite, sphagnum peat moss, fertilizer, a wetting agent and coir to help your indoor plants grow. Nora Colomer, FOXNews.com, 4 Apr. 2025 Another approach is to manage the fairy ring with fertilizers, wetting agents and careful watering. oregonlive, 13 May 2023 One idea is that a yawn can help distribute a protective wetting agent called surfactant in the lungs and prevent them from collapsing. Jennifer Walter, Discover Magazine, 29 Dec. 2020

Word History

First Known Use

1927, in the meaning defined above

Time Traveler
The first known use of wetting agent was in 1927

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Cite this Entry

“Wetting agent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wetting%20agent. Accessed 6 Jun. 2026.

Medical Definition

wetting agent

noun
: a substance that promotes the spreading of a liquid on a surface or the penetration of a liquid into a material especially by becoming adsorbed in such a way that the liquid is no longer repelled

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