Source : Webster's Revised Unabridged Dictionary (1913)

Agglomerate \Ag*glom"er*ate\, v. t. [imp. & p. p.
   {Agglomerated}; p. pr. & vb. n. {Agglomerating}.] [L.
   agglomeratus, p. p. of agglomerare; ad + glomerare to form
   into a ball. See {Glomerate}.]
   To wind or collect into a ball; hence, to gather into a mass
   or anything like a mass.

         Where he builds the agglomerated pile.   --Cowper.

Agglomerate \Ag*glom"er*ate\, v. i.
   To collect in a mass.

Agglomerate \Ag*glom"er*ate\, Agglomerated \Ag*glom"er*a`ted\,
   a.
   1. Collected into a ball, heap, or mass.

   2. (Bot.) Collected into a rounded head of flowers.

Agglomerate \Ag*glom"er*ate\, n.
   1. A collection or mass.

   2. (Geol.) A mass of angular volcanic fragments united by
      heat; -- distinguished from conglomerate.

Source : WordNet®

agglomerate
     adj : clustered together but not coherent; "an agglomerated flower
           head" [syn: {agglomerated}, {agglomerative}, {clustered}]

agglomerate
     v : form into one cluster