twinned

(twind)

adjective

  1. born as a twin or twins
  2. paired or coupled
  3. consisting of two crystals forming a twin

See twinned in American Heritage Dictionary 4

adjective
  1. Born two in a single birth.
  2. Paired or coupled with something identical or similar.
  3. Mineralogy Formed by the process of twinning. Used of crystals.
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