flocculate
    v 1: form into an aggregated lumpy or fluffy mass; "the
         protoplasms flocculated"
    2: cause to become a fluffy or lumpy aggregate; "The chemist
       flocculated the suspended material"

Flocculate \Floc"cu*late\, v. i. [imp. & p. p. Flocculated; p.
   pr. & vb. n. Flocculating.] (Geol.)
   To aggregate into small lumps.
   [1913 Webster]

Flocculate \Floc"cu*late\, a. (Zool.)
   Furnished with tufts of curly hairs, as some insects.
   [1913 Webster]

Flocculate \Floc"cu*late\, v. t.
   To convert into floccules or flocculent aggregates; to make
   granular or crumbly; as, the flocculating of a soil improves
   its mechanical condition.

         When applied to clay soils it [lime] binds the small
         particles together, or flocculates them. --I. P.
                                                  Roberts.
   [Webster 1913 Suppl.]