IPA: //vɪˈzɪəriəl//
KK: /vɪˈzɪrɪəl/
Relating to a high-ranking political advisor or minister, especially in historical contexts.
The vizierial council made important decisions for the kingdom.
Vizierial is derived from "vizier" (from Arabic "wazīr", meaning minister or helper) and the suffix "-ial" (meaning relating to). The term "vizierial" refers to something that is related to or characteristic of a vizier, a high-ranking political advisor or minister in certain historical Islamic states.
Think of a vizier as a high-ranking minister or helper, and remember that 'vizierial' means relating to that role.