DeFi stands for decentralized finance and is a general term for peer-to-peer financial services on public blockchains (mainly Ethereum).

DeFi is an application of the Ethereum network's smart contract concept that automates the terms of peer-to-peer agreements and enables the creation of systems that replicate financial market services such as loans, insurance, and even stock trading in a decentralized manner, all of which which are not regulated by third party interference