What does "aggregate" mean?

Additional senses

1. 2.(Bot.) Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry.
2. 3.(Min. & Geol.) Having the several component parts adherent to each other only to such a degree as to be separable by mechanical means.
3. 4.(Zoöl.) United into a common organized mass; -- said of certain compound animals. Corporation aggregate. (Law) See under Corporation.
4. 5.To bring together; to collect into a mass or sum. "The aggregated soil." Milton.
5. 6.To add or unite, as, a person, to an association. 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.
6. 7.To amount in the aggregate to; as, ten loads, aggregating five hundred bushels. [Colloq.]
7. 8.A mass, assemblage, or sum of particulars; as, a house is an aggregate of stone, brick, timber, etc. In an aggregate the particulars are less intimately mixed than in a compound.
8. 9.(Physics) A mass formed by the union of homogeneous particles; -- in distinction from a compound, formed by the union of heterogeneous particles. In the aggregate, collectively; together.