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2 definitions found
 for anneal
From The Collaborative International Dictionary of English v.0.48 :

  Anneal \An*neal"\, v. t. [imp. & p. p. Annealed; p. pr. & vb.
     n. Annealing.] [OE. anelen to heat, burn, AS. an?lan; an on
     + ?lan to burn; also OE. anelen to enamel, prob. influenced
     by OF. neeler, nieler, to put a black enamel on gold or
     silver, F. nieller, fr. LL. nigellare to blacken, fr. L.
     nigellus blackish, dim. of niger black. Cf. Niello,
     Negro.]
     1. To subject to great heat, and then cool slowly, as glass,
        cast iron, steel, or other metal, for the purpose of
        rendering it less brittle; to temper; to toughen.
        [1913 Webster]
  
     2. To heat, as glass, tiles, or earthenware, in order to fix
        the colors laid on them.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  anneal
      v 1: bring to a desired consistency, texture, or hardness by a
           process of gradually heating and cooling; "temper glass"
           [syn: anneal, temper, normalize]

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