hardening

noun

hard·​en·​ing ˈhärd-niŋ How to pronounce hardening (audio)
ˈhär-dᵊn-iŋ
Synonyms of hardeningnext
: sclerosis sense 1
hardening of the arteries

Examples of hardening in a Sentence

Recent Examples on the Web
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Officials say proper landscaping, combined with defensible space and home hardening, can reduce the likelihood of a home igniting during a wildfire. City News Service, Daily News, 4 May 2026 As this sequence plays out, the social fabric further shreds and unravels; trust circles shrink and become ever more homogeneous; and hostility, mean spiritedness, and a general hardening take hold in society. Nick Lichtenberg, Fortune, 3 May 2026 This condition occurs when mineral deposits accumulate in the arteries, leading to arterial hardening. Kathleen Ferraro, Verywell Health, 1 May 2026 For tender plants, allow a hardening off period of a week to help the plants transition from the garden center environment to the conditions in your garden. Mary Marlowe Leverette, Southern Living, 26 Apr. 2026 See All Example Sentences for hardening

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of hardening was in the 15th century

Browse Nearby Words

Cite this Entry

“Hardening.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hardening. Accessed 13 May. 2026.

Kids Definition

hardening

noun
hard·​en·​ing
: sclerosis
hardening of the arteries

Medical Definition

hardening

noun
hard·​en·​ing ˈhärd-niŋ, -ᵊn-iŋ How to pronounce hardening (audio)
: sclerosis sense 1
hardening of the arteries

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