Bitcoin - Financial definition
Concise definition of the term bitcoin
Bitcoin is a digital currency that is exchanged in a decentralized network, without the involvement of a central bank or other administrative entity. Transactions take place peer-to-peer through the use of cryptography, and are recorded in a public distributed ledger called blockchain.
Comprehensive definition of the term bitcoin
It has been invented in 2009 by an unidentified person or group known by the pseudonym Satoshi Nakamoto and released as open-source software.