What does "inauguration" mean?

The act of inaugurating, or inducting into office with solemnity; investiture by appropriate ceremonies.

What is a synonym for "inauguration"?

Common synonyms include: accedence, acceding, acceptance, accession, accessions, admission.

Pronounced //ɪˌnɔːɡ(j)ʊˈɹeɪʃən//.

/ɪˌnɔːɡ(j)ʊˈɹeɪʃən/ noun

noun ·Moderate ·High school level

Noun

1
The act of inaugurating, or inducting into office with solemnity; investiture by appropriate ceremonies. countable, uncountable
2
the act of starting a new operation or practice wordnet
3
The formal beginning, initiation, or entry into service of any movement, enterprise, building, event, etc. countable, uncountable
"Near-synonym: dedication"
4
the ceremonial induction into a position wordnet

"At the inauguration ceremony a plaque was unveiled in honor of the founder."

From Middle French inauguration.