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[hahr-dn-er] /ˈhɑr dn ər/

a person or thing that .
a substance mixed with paint or other protective covering to make the finish harder or more durable.
Photography. a chemical used to raise the melting point of an emulsion.
a person or thing that hardens
a substance added to paint or varnish to increase durability
an ingredient of certain adhesives and synthetic resins that accelerates or promotes setting

1610s, from harden + -er (1).


Read Also:

  • Hardening

    [hahr-dn-ing] /ˈhɑr dn ɪŋ/ noun 1. a material that another, as an alloy added to iron to make steel. 2. the process of becoming hard or rigid. [hahr-dn] /ˈhɑr dn/ verb (used with object) 1. to make or harder: to harden steel. 2. to make pitiless or unfeeling: to harden one’s heart. 3. to make […]

  • Hardening of arteries

    hardening of arteries hard·en·ing of arteries (här’dn-ĭng) n. The condition of arteriosclerosis.

  • Hardening of the arteries

    noun 1. a nontechnical name for arteriosclerosis

  • Harden off

    verb 1. (adverb) to accustom (a cultivated plant) or (of such a plant) to become accustomed to outdoor conditions by repeated exposure

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