Aggregate/ˈæɡrɪɡət/ Definition 1 of 4Pro Tip 1/3Parts to Whole Think of 'aggregate' as pieces coming together to form one unit. The researcher analyzed the aggregate of symptoms to diagnose the condition. Pro Tip 2/3Not Just Numbers 'Aggregate' can refer to non-numeric collections as well as figures. Different cultures in a society form a rich cultural aggregate. Pro Tip 3/3Abstract Concepts 'Aggregate' can be used to describe abstract, not only physical, collections. Her aggregate experiences led to profound personal growth.