The Collaborative International Dictionary of English v.0.48:

United \U*nit"ed\, a.
   Combined; joined; made one.
   [1913 Webster]

   United Brethren. (Eccl.) See Moravian, n.

   United flowers (Bot.), flowers which have the stamens and
      pistils in the same flower.

   The United Kingdom, Great Britain and Ireland; -- so named
      since January 1, 1801, when the Legislative Union went
      into operation.

   United Greeks (Eccl.), those members of the Greek Church
      who acknowledge the supremacy of the pope; -- called also
      uniats.
      [1913 Webster]