cross-posting UK US noun [C or U]
► COMMUNICATIONS, INTERNET the act of sending a message to more than one internet discussion group or news group at a time, or the message that is sent: »
Cross-posting should be limited to a small number of directly related groups.
»We do not accept cross-postings unless they are to highly appropriate groups.
cross-post verb [I or T]
► »
Please, only cross-post if you are sure your article is suitable for the different newsgroups.
Financial and business terms. 2012.