The Collaborative International Dictionary of English v.0.48:

Aggregate \Ag"gre*gate\, v. t. [imp. & p. p. Aggregated; p.
   pr. & vb. n. Aggregating.] [L. aggregatus, p. p. of
   aggregare to lead to a flock or herd; ad + gregare to collect
   into a flock, grex flock, herd. See Gregarious.]
   1. To bring together; to collect into a mass or sum. "The
      aggregated soil." --Milton.
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   2. To add or unite, as, a person, to an association.
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            It is many times hard to discern to which of the two
            sorts, the good or the bad, a man ought to be
            aggregated.                           --Wollaston.
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   3. To amount in the aggregate to; as, ten loads, aggregating
      five hundred bushels. [Colloq.]
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   Syn: To heap up; accumulate; pile; collect.
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