Plain meaning
Start with the shortest useful explanation before going deeper.
A stablecoin that maintains its peg through algorithmic mechanisms (mint/burn arbitrage, elastic supply) rather than being fully backed by reserves. Algorithmic stablecoins use smart contracts to expand or contract supply based on demand. The category carries significant risk after the UST/Luna collapse in 2022. On Solana, UXD Protocol attempted a delta-neutral algorithmic design.