IPA: /ˈrɛɡ.jʊ.lə.tɔː.ri/
KK: /ˈrɛɡjʊlətɔri/
Related to rules or laws that control how things are done, especially in business or government.
The company must comply with all regulatory requirements to operate legally.
Regulatory → It is formed from "regula" (meaning rule or guideline) and the suffix "-ory" (meaning relating to or characterized by). The word "regulatory" refers to something that is related to or characterized by rules or guidelines, particularly in the context of laws or regulations.
Think of 'rules' ('regula') that are 'related to' ('-ory') how things should be done — that's what regulatory means.