What it means
DEXs usually let users trade directly from non-custodial wallets.
Why it matters
Users should understand gas fees, slippage, token approvals and smart contract risk.
Common mistake
Do not treat DEX in crypto as a universal rule. Exchanges, wallets and card apps may use the same term differently, especially around limits, fees, networks and account restrictions.
User action
Before relying on this term, check the provider's official help page, fee schedule or product terms. If funds are involved, test with a small amount first and keep a record of the transaction or setting.
Related pages
Continue with CEX or return to the crypto glossary.
How to use this term
Use DEX as a practical checkpoint when comparing exchanges, wallets, cards or on-chain tools.
What to check
Check how the term appears in fees, limits, account rules, wallet flows and risk notes before making a platform decision.