Alternative letter-case form of BitTorrent
"The software manual accepted both the standard capitalization and the alternative lower-case spelling bittorrent without issue."
In plain English: BitTorrent is a way to download files quickly by getting pieces of them from many other people at once instead of just one source.
"He used bittorrent to download large files quickly from other users on his network."
A peer-to-peer file sharing protocol.
"Users often rely on bittorrent to efficiently download large files through a decentralized network of peers."
The word combines "bit," a unit of digital information, with "torrent," meaning a rapid flow of water. This name describes the technology's method of downloading data as a fast-moving stream from multiple sources simultaneously.