IPA: /ˌæɡrɪˈɡeɪʃənl/
KK: /æɡrɪˈɡeɪʃənl/
Relating to the process of gathering or collecting things together into a group or whole.
The aggregational approach to data analysis allows for more comprehensive insights.
Aggregational → It is formed from "ad-" (meaning to) and "gregare" (meaning to gather) combined with the suffix "-al" (meaning relating to). The word "aggregational" refers to something that is related to the act of gathering or collecting together.
Think of 'gathering together' ('ad-' means to, and 'gregare' means to gather) when you remember that 'aggregational' relates to the process of collecting things.