s. agregación, acumulación

agregación, aumento, acumulación, concentración, suma, amontonamiento, conjunto, agrupación

Agregado, masa, conjunto

(n.) = agregado, conjunto, agrupación, suma, colección.
Ex: We should realize that a library is not simply an aggregation of discrete recorded materials; rather, it represents a collection, or more precisely collection of works.

n. collection, mass; process of collecting or gathering

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Noun
1. several things grouped together or considered as a whole
(synonym) collection, accumulation, assemblage
(hypernym) group, grouping
(hyponym) procession
2. the act of gathering something together
(synonym) collection, collecting, assembling
(hypernym) grouping
(hyponym) agglomeration

(n.)
The act of aggregating, or the state of being aggregated; collection into a mass or sum; a collection of particulars; an aggregate.
  

Process in corporate  financial planning whereby the smaller investment proposals of each of the firm's operational units are aggregated and effectively treated as a whole.