retardant

adjective

re·​tar·​dant ri-ˈtär-dᵊnt How to pronounce retardant (audio)
: serving or tending to retard
a growth-retardant substance
retardant noun

Examples of retardant 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.
Firefighters are still battling the blaze, using helicopters and aircraft to douse the flames with water and drop retardant. Michael Dorgan, Fox News, 11 Jan. 2025 Aircraft have retardant surrounding the fire's perimeter, and ground crews have a hose-lay around the fire. Ca Wildfire Bot, Sacramento Bee, 27 Feb. 2025 Helicopter crews worked night and day dropping water on flames for most of the week, and for several days, air tankers were sent to make retardant drops on fire in the remote, steep terrain. Karen Kucher, San Diego Union-Tribune, 30 Jan. 2025 Pink flame retardant on a home in the hills of Mandeville Canyon on Monday. Terry Dickerson, NBC News, 16 Jan. 2025 See All Example Sentences for retardant

Word History

First Known Use

1642, in the meaning defined above

Time Traveler
The first known use of retardant was in 1642

Browse Nearby Words

Cite this Entry

“Retardant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retardant. Accessed 5 Apr. 2025.

Kids Definition

retardant

adjective
re·​tar·​dant ri-ˈtärd-ᵊnt How to pronounce retardant (audio)
: serving or tending to retard
flame-retardant fabrics

More from Merriam-Webster on retardant

Last Updated: - Updated example sentences
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