The Collaborative International Dictionary of English v.0.48:

assembled \assembled\ adj.
   1. brought together into a group or crowd. the assembled
      letters in my office

   Syn: accumulated, collected, congregate, massed.
        [WordNet 1.5]

   2. 1 formed by fitting or joining components together.

   Syn: built(prenominal), made-up.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Assemble \As*sem"ble\, v. t. [imp. & p. p. Assembled; p. pr. &
   vb. n. Assembling.] [F. assembler, fr. LL. assimulare to
   bring together to collect; L. ad + simul together; akin to
   similis like, Gr. ? at the same time, and E. same. Cf.
   Assimilate, Same.]
   1. To collect into one place or body; to bring or call
      together; to convene; to congregate.
      [1913 Webster]

            Thither he assembled all his train.   --Milton.
      [1913 Webster]

            All the men of Israel assembled themselves. --1
                                                  Kings viii. 2.
      [1913 Webster]

   2. To collect and put together the parts of; as, to assemble
      a bicycle, watch, gun, or other manufactured article.
      [Webster 1913 Suppl.]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "assembled":
   accumulated, agglomerate, aggregate, allied, amassed, associated,
   banded together, bound, bracketed, built, bunched, bundled, cast,
   clumped, clustered, collected, combined, conglomerate, congregate,
   congregated, conjoined, connected, constructed, copulate, coupled,
   crafted, created, cumulate, custom, custom-built, custom-made,
   extracted, fabricated, fascicled, fasciculated, fashioned, forged,
   formed, gathered, glomerate, grown, hand-in-glove, hand-in-hand,
   handcrafted, handmade, harvested, heaped, homemade, homespun,
   in session, incorporated, integrated, intimate, joined, joint,
   knotted, leagued, linked, lumped, machine-made, machined, made,
   made to order, man-made, manufactured, massed, matched, mated,
   meeting, merged, milled, mined, molded, packaged, paired, piled,
   prefab, prefabricated, processed, put together, raised,
   ready-for-wear, ready-formed, ready-made, ready-prepared,
   ready-to-wear, refined, shaped, smelted, spliced, stacked, tied,
   undivided, united, unseparated, wedded, well-built,
   well-constructed, well-made, wrapped up, yoked