To set, fix or determine (a time or place for something such as a meeting, or the meeting itself) by authority or agreement.
"The committee appointed Thursday at noon as the time to break ground on the new library."
In plain English: To appoint someone means to officially choose them for a specific job or role.
"The committee decided to appoint her as their new leader."
Usage: Use appoint to mean officially selecting someone for a job or setting a specific date and location for an event through formal agreement. Do not confuse this with "point," which simply indicates direction rather than establishing an official arrangement.
The word "appoint" comes from Old French apointier, meaning to prepare or arrange something by fixing it at a specific point. It entered English via Middle English with this sense of setting or deciding on details, derived ultimately from the Latin phrase for bringing back to a mark.