IPA: /prɪˈsɛntər/
KK: /prɪˈsɛntər/
A person, usually a cleric, who leads the singing in a church or cathedral, guiding the choir or congregation during services.
The precentor stood at the front of the church, directing the choir as they sang beautifully.
Precentor is formed from "prae-" (meaning before) and "cantor" (from Latin "cantare", meaning to sing). The word refers to a person who leads or sings before a congregation, particularly in a church setting.
Think of someone who 'sings before' ('prae-' means before and 'cantor' means singer) — that's why a precentor is a leader in singing.