Look up hardening or harden in Wiktionary, the free dictionary.

Hardening is the process by which something becomes harder or is made harder.

Hardening may refer to:

• Hardening (metallurgy), a process used to increase the hardness of a metal
• Hardening (botany) or cold hardening, a process in which a plant undergoes physiological changes to mitigate damage from cold temperatures
• Hardening (computing), the process of securing a system against attack
• Target hardening, strengthening of the security of a building or installation to protect it from attack
• Sclerotization, a biochemical process forming cuticle in arthropods

• All pages with titles containing Hardening
• Harden (disambiguation)
• Hardness, a measure of resistance to deformation

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