- present participle of harden.
hardening
Americannoun
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a material that hardens another, as an alloy added to iron to make steel.
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the process of becoming hard or rigid.
noun
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the act or process of becoming or making hard
-
a substance added to another substance or material to make it harder
Etymology
Origin of hardening
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Part of that work is home hardening and defensible space.
From Los Angeles Times ● Oct. 17, 2026
His remarks came after Washington and Tehran had issued demands for compensation over the five-month war, hardening their positions.
From Barron's ● Aug. 12, 2026
The Qatari aircraft lacks several features of older Air Force One jets, including the ability to refuel midair and nuclear hardening.
From The Wall Street Journal ● Aug. 2, 2026
"Iran's work there has likely centred around continued internal excavation and hardening of the facility that would provide further protection against aerial attacks."
From BBC ● Aug. 1, 2026
Her anger was growing, her voice rising and hardening.
From "Americanah" by Chimamanda Ngozi Adichie
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