sederunt
A formal meeting, especially of a judicial or ecclesiastical body.
They held a sederunt, and were filled with tremulous joy, for, in spite of their familiarity with all the other worlds and cycles, they had a very human awe of things sent from Ghostland.
Those people present at such a meeting.
Where it comes from
From Latin sederunt (“there were sitting”).
Adapted from the Wiktionary entry sederunt (CC BY-SA 4.0).