Flash loan
A loan with no collateral that must be borrowed and repaid inside a single transaction. If repayment fails, the whole transaction is cancelled.
Flash loan in more detail
DeFi also has loans with no collateral that must be borrowed and repaid inside a single transaction. If the repayment fails, the whole transaction is cancelled as if it never happened. Traders use them for arbitrage, for example buying a token where it is cheap and selling it where it is dear in one step.
All 128 terms · Checked against the lesson's sources on 10 October 2026.
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