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
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.
This year’s line-hardening—by my count, some twenty-three per cent of cases—is both remarkable and troubling. Ruth Marcus, New Yorker, 30 June 2026 Horvath said the county hopes to receive tens of millions of dollars in state funding for additional brush clearance, fuel modification, home hardening and other initiatives. Connor Sheets, Los Angeles Times, 26 June 2026 The report is correct – grid hardening is critical to grow America’s economy (and not just data centers) and that expansion is a national security imperative. Ed Hirs, Forbes.com, 23 June 2026 His response to the Palisades and Eaton fires is to expand brush clearance efforts and home hardening. Steve Scauzillo, Daily News, 27 May 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 2 Jul. 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

More from Merriam-Webster on hardening

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster