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Dictionary DeFi

Decentralized Exchange

Also known as DEX DEXs DEXes decentralised exchange

A decentralised exchange, or DEX, lets users trade crypto assets directly from their own wallets through smart contracts, without handing custody to a company. Many DEXs use automated market makers, where trades are priced against pools of tokens supplied by liquidity providers, while others use on-chain order books. DEXs are open to anyone, but users are exposed to contract risk, price slippage and scam tokens listed without vetting.

Written by our editors · Updated October 15, 2026

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