(1) In online discussions, a series of messages that have been posted as replies to each other. A single forum or conference typically contains many threads covering different subjects. By reading each message in a thread, one after the other, you can see how the discussion has evolved. You can start a new thread by posting a message that is not a reply to an earlier message.
Sun's threads page Provides links to information on threads and multithreads, FAQs, user and man guides, example programs that use threads, and links to related sites containing papers and bibliographies.