The term "DEX" most commonly stands for "Decentralized Exchange," which is a peer-to-peer marketplace where cryptocurrency transactions occur directly between traders without the need for an intermediary like a bank or exchange. DEXs use blockchain technology and smart contracts to facilitate these trades securely and transparently. Additionally, DEX may also stand for "Digital Employee Experience" in workplace technology contexts or have other meanings depending on the field, but in the crypto context, it refers to decentralized exchanges.