Definition
A popular browser extension and mobile app cryptocurrency wallet that enables users to interact with Ethereum and compatible blockchains. MetaMask is the most widely used gateway to DeFi and Web3 applications.
Why It Matters
MetaMask is the most common hot wallet for interacting with Web3 apps. Understanding how to use it safely — and its risks — is essential for DeFi and NFT participation.
Example
A user installs MetaMask, creates a new wallet, securely saves the seed phrase, and uses it to connect to Uniswap to swap tokens.
Related Terms
Hot Wallet
Wallet
dApp
DeFi