Plain meaning
Start with the shortest useful explanation before going deeper.
A trading fee that automatically adjusts based on real-time market conditions such as volatility, volume, or liquidity depth. During high-volatility periods, dynamic fees increase to compensate LPs for greater impermanent loss risk; during calm markets, fees decrease to attract more trading volume. Meteora's DLMM pools pioneered dynamic fees on Solana, using a formula that factors in bin-crossing frequency.