IMAP4

Definition:

See IMAP.

Here's a word you may not know...

BitTorrent

BitTorrent is a peer-to-peer protocol that allows computers to distribute files. Unlike other file sharing protocols, BitTorrent relies on multiple computers to share tiny pieces of each file. Therefore no one computer has the burden of having to distribute the entire file.

BitTorrent networks are used widely to distribute large music and video files.