Other forms: forums, fora
A forum is a place or meeting where matters are openly discussed. A public forum, an online forum, a forum for debate.
The Roman one was the open square at the centre of a city where business and law were conducted. The plural is forums or fora, and forums is now the ordinary English one.
1nounforumA place or meeting where matters are openly discussed.
“The town hall held a public forum where residents could discuss the new road.”
forum is a meeting.
Latin forum means a public market place, from a root meaning an outside space.
Proto-Indo-European
*dʰwer-
Latin
forum — public market place, forum
English, today
forum
From Latin forum (“public market place, forum”). a doublet of fuero and door.
Etymology from Wiktionary, CC BY-SA