Hardener Definition

härdn-ər
noun
A person or thing that hardens something.
Webster's New World
One that hardens, especially a substance added to varnish or paint to give it a harder surface or finish.
American Heritage

Other Word Forms of Hardener

Noun

Singular:
hardener
Plural:
hardeners

Origin of Hardener

  • harden +‎ -er

    From Wiktionary

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