1. (n.) The act of inuagurating, or inducting into office with solemnity; investiture by appropriate ceremonies.

2. (n.) The formal beginning or initiation of any movement, course of action, etc.; as, the inauguration of a new system, a new condition, etc.

accedence acceptance accession admission admittance anchorage baccalaureate service baptism celebration ceremonial ceremony colonization coming out commencement constitution convocation coronation curtain raiser debut effectuation embarkation embarkment empty formality enlistment enrollment enthronement establishment exercise exercises first appearance fixation floating flotation formal formality formation foundation function graduation graduation exercises immission inaugural inaugural address inception induction initiation installation installment instatement institution introduction intromission investiture launching liturgy lodgment maiden speech materialization mooring mummery observance office opener ordination organization peopling performance placement plantation population preliminary realization religious ceremony rite rite de passage rite of passage ritual service setting-up settlement settling solemnity solemnization taking office unveiling