1. 
[syn: aggregate, aggregated, aggregative, mass]
The Collaborative International Dictionary of English v.0.48:
Aggregative \Ag"gre*ga*tive\, a. [Cf. Fr. agr['e]gatif.]
   1. Taken together; collective.
      [1913 Webster]
   2. Gregarious; social. [R.] --Carlyle.
      [1913 Webster]
   3. tending to gather into a mass.
      [WordNet 1.5]
WordNet (r) 3.0 (2006):
aggregative
    adj 1: formed of separate units gathered into a mass or whole;
           "aggregate expenses include expenses of all divisions
           combined for the entire year"; "the aggregated amount of
           indebtedness" [syn: aggregate, aggregated,
           aggregative, mass]