A convocation (from the Latin convocare meaning "to call/come together", a translation of the Greek ἐκκλησία ekklēsia) is a group of people formally assembled for a special purpose, mostly ecclesiastical or academic. The Britannica dictionary defines it as "a large formal meeting of people (such as church officials)".
In academic use, it can refer variously to the formal body of an institution's alumni or to a ceremonial assembly of the university, particularly at a graduation or commencement ceremony but, at some institutions, for a ceremony at the start of the academic year to welcome incoming students.