In government and politics, inauguration is the process of swearing a person into office and thus making that person the incumbent. Such an inauguration commonly occurs through a formal ceremony or special event, which may also include an inaugural address by the new official. Inauguration is the act of formally admitting a person to office or bringing something into existence. Find out the meaning , pronunciation, and translations of inauguration in different languages and contexts. An inauguration is a ceremony that formally marks the start of something. You’ve probably seen the inauguration ceremony when a new president takes office.