What does "call to order" mean?

To formally signal the start of (a meeting or function or assembly or court).

What is a synonym for "call to order"?

Common synonyms include: commencement, gavel, initiation, opening, start.

verb

verb ·Rare ·Advanced level

Verb

1
To formally signal the start of (a meeting or function or assembly or court). transitive
2
open formally wordnet