Learner's definition of PRESIDE
to be in charge of something (such as a trial)
— often + at
preside over (something)
to be in charge of something (such as a meeting or organization)
The vice president presided over the meeting.
The Chief Justice presides over the Supreme Court.
He has presided over the company for 15 years.
to be in charge of a country, company, etc., during (a particular time or activity)