1. General: Collective amount, sum, or mass arrived-at by adding or putting together all components, elements, or parts of an assemblage or group, without implying that the resulting total is whole (contains everything that should be in it). 
2. Construction: Granular mineral material (such as sand, gravel, crushed stone) used with a bonding medium (such as cement or clay) to make concrete, ... Read more

USAGE EXAMPLE

The pieces were small and easily breakable, but in aggregate they formed a sturdy, long-lasting, and low-cost product that consumers were happy with.