Crypto" is short for cryptocurrency, which is a type of digital or virtual currency that uses cryptography for security. Unlike traditional money issued by governments (like the dollar or euro), cryptocurrencies are typically decentralized and run on blockchain technology—a distributed ledger that records all transactions across a network of computers.
Popular examples include $BTC Bitcoin, $ETH Ethereum, and $SOL Solana. People use crypto for various purposes such as investment, online purchases, or decentralized finance .