inaugural

Universal Words adjective [onlybeforenoun] (of an official speech, meeting, etc.) first, and marking the beginning of sth important, for example the time when a new leader or parliament starts work, when a new organization is formed or when sth is used for the first time: the President's inaugural address * the professor's inaugural lecture * the inaugural meeting of the geographical society * the inaugural flight of the space shuttle inaugural noun [C,usually sing.] (especially AmE): the presidential inaugural in January