in a general sense, denotes the sum of several things added together, or the collection of them into one whole. Thus, a house is an aggregate of stones, wood, mortar, &c. It differs from a mixed or compound; for, in the latter, the union is more intimate than between the parts of an aggregate.

in Botany, is a term used to express those flowers which are composed of parts or florets, so united, by means either of the receptacle or calyx, that no one of them can be taken away without destroying the form of the whole. They are opposed to simple flowers, which have no such common part. See Botany Index.