chatgroup

chat +‎ group

chatgroup (plural chatgroups)

1. (Internet) An online community allowing users to take part in text-based conversations.
   • 2008, David Crystal, Txtng: The Gr8 Db8, page iii:

     electronic discourse The kind of language used in computer-mediated communication, especially as found in dialogue situations such as email, chatgroups, or texting exchanges.

• talkgroup