Source : Webster's Revised Unabridged Dictionary (1913)

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}.]
   To collect into one place or body; to bring or call together;
   to convene; to congregate.

         Thither he assembled all his train.      --Milton.

         All the men of Israel assembled themselves. --1 Kings
                                                  viii. 2.

Source : WordNet®

assembling
     n : the act of gathering something together [syn: {collection},
         {collecting}, {aggregation}]