discussion group

noun

1

: a group of people who meet to discuss shared topics of interest

… every Sunday for most of one school year Ellie went to a regular discussion group at a nearby church.

—Carl Sagan, Contact, 1985

2

: an electronic forum devoted to a particular topic : newsgroup

Today a troll is someone who deliberately sends a rude or annoying message to a discussion group on the Internet.

—Ruth Walker, The Christian Science Monitor, 6 June 2011

Word History

First Known Use

1895, in the meaning defined above

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