Twinned

from WordNet (r) 3.0 (2006)

twinned
    adj 1: being two identical [syn: {duplicate}, {matching},
           {twin(a)}, {twinned}]

from The Collaborative International Dictionary of English v.0.48

Twin \Twin\, v. i. [imp. & p. p. {Twinned}; p. pr. & vb. n.
   {Twinning}.]
   1. To bring forth twins. --Tusser.
      [1913 Webster]

   2. To be born at the same birth. --Shak.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Twinned \Twinned\, a. (Crystallog.)
   Composed of parts united according to a law of twinning. See
   {Twin}, n., 4.
   [1913 Webster]

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