[1] : The Collaborative International Dictionary of English v.0.48

united \unit"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
see also:
united brethren moravian united flowers the united kingdom united greeks uniats 

[2] : The Collaborative International Dictionary of English v.0.48

unite \unite"\, v. t. imp.  p. p. united; p. pr.  vb. n.
   uniting. l. unitus, p. p. of unire to unite, from unus
   one. see one.
   1. to put together so as to make one; to join, as two or more
      constituents, to form a whole; to combine; to connect; to
      join; to cause to adhere; as, to unite bricks by mortar;
      to unite iron bars by welding; to unite two armies.
      1913 webster

   2. hence, to join by a legal or moral bond, as families by
      marriage, nations by treaty, men by opinions; to join in
      interest, affection, fellowship, or the like; to cause to
      agree; to harmonize; to associate; to attach.
      1913 webster

            under his great vicegerent reign abide,
            united as one individual soul.        --milton.
      1913 webster

            the king proposed nothing more than to unite his
            kingdom in one form of worship.       --clarendon.
      1913 webster

   syn: to add; join; annex; attach. see add.
        1913 webster
see also:
united uniting one add 

[3] : WordNet (r) 2.0

united
     adj 1: characterized by unity; being or joined into a single
            entity; "presented a united front" ant: divided
     2: involving the joint activity of two or more; "the attack was
        met by the combined strength of two divisions"; "concerted
        action"; "the conjunct influence of fire and strong
        dring"; "the conjunctive focus of political opposition";
        "a cooperative effort"; "a united effort"; "joint military
        activities" syn: combined, concerted, conjunct, conjunctive,
         cooperative
     3: of or relating to two people who are married to each other
        syn: joined
see also:
divided combined concerted conjunct conjunctive cooperative 
joined 

[4] : Moby Thesaurus II by Grady Ward, 1.0

125 moby thesaurus words for "united":
   accompanying, accordant, agreeable, agreed, agreeing, akin, allied,
   amalgamated, amicable, assembled, assimilated, associate,
   associated, at one, at one with, attuned, banded together, blended,
   bound, bracketed, coacting, coactive, coadunate, coalesced,
   coincident, collaborative, collected, collective, collusive,
   combinative, combinatory, combined, combining, common, communal,
   compatible, composite, concerted, concomitant, concordant,
   concurrent, concurring, congenial, conjoined, conjoint, conjugate,
   conjunctive, connected, connective, consilient, consolidated,
   conspiratorial, cooperant, cooperative, coordinate, coordinated,
   copulate, corresponding, coupled, coworking, eclectic, empathetic,
   empathic, en rapport, frictionless, fused, gathered, hand-in-glove,
   hand-in-hand, harmonious, in accord, in agreement, in concert,
   in harmony, in rapport, in tune, incorporated, inharmony, integral,
   integrant, integrated, intimate, joined, joint, knotted, leagued,
   like-minded, linked, matched, mated, meeting, merged, mixed,
   mutual, of like mind, of one mind, one, paired, parasitic,
   partnership, peaceful, rolled into one, saprophytic, shared,
   spliced, symbiotic, sympathetic, synchronous, syncretistic,
   syncretized, synergetic, synergic, synergistic, synthesized, tied,
   together, unanimous, understanding, undivided, unified, unitary,
   uniting, unseparated, wedded, yoked

United >> U Words
United, definition of term: United
united_pag1.html

United States >> U Words
United States, definition of term: United States
united+states_pag1.html

United Nations >> U Words
United Nations, definition of term: United Nations
united+nations_pag1.html

United Kingdom >> U Words
United Kingdom, definition of term: United Kingdom
united+kingdom_pag1.html

United States O >> U Words
United States O, definition of term: United States O
united+states+o_pag1.html

United Arab Rep >> U Words
United Arab Rep, definition of term: United Arab Rep
united+arab+rep_pag1.html

United States C >> U Words
United States C, definition of term: United States C
united+states+c_pag1.html