A president is a leader of an organization, company, club, trade union, university, country, a division or part of any of these, or, more generally, anything else.
Etymologically, a president is one who presides, (from Latin prae- "before" + sedere "to sit"; giving the term praeses). Originally, the term referred to the presiding officer of a ceremony or meeting (i.e., chairman), but today it most commonly refers to an official. Among other things, "President" today is a common title for the heads of state of most republics, whether popularly elected, chosen by the legislature or by a special electoral college.
Other articles related to "jarv":
... The head of a university or non-profit corporation, particularly in the United States of America, is often known as president ... In academic or education systems with multiple independent campuses, the relationship between the roles of university president and chancellor can become quite complicated ...