A more thorough explanation:

Definition: A primate is a high-ranking member of the clergy, such as an archbishop or bishop, who has authority over other bishops in a particular region or province.

Example: The Archbishop of Canterbury is the primate of the Church of England, and has authority over all other bishops in England.

Explanation: The example illustrates how the Archbishop of Canterbury is a primate because he is the highest-ranking bishop in the Church of England and has authority over all other bishops in the country. This is similar to how other primates, such as the Archbishop of York or the Primate of All Ireland, have authority over bishops in their respective regions.