Orca Crypto
DeFi term

AMM

An automated market maker, which prices trades with a formula instead of an order book.

All terms
All termsAddressBlockBlock timeBlockchainConfirmationGasGweiHashMempoolNodePrivate keyPublic keySeed phraseTransactionWalletAll time high (ATH)Bear marketBull marketCandlestickCapitulationChart patternsDollar cost averaging (DCA)Funding rateLeverageLimit orderLiquidationLiquidityMarket capMarket orderOrder bookPosition sizingRisk managementSlippageSpreadSupport and resistanceTrendVolatilityVolumeWhaleAMMBridgeCEXDAODeFiDepegDEXFlash loanGovernance tokenImpermanent lossLiquidity poolLP tokenOraclePerpetual (perp)RestakingRWAStablecoinTVLWrapped tokenYield farmingAirdropAlphaApe inBagholderDegenDiamond handsFloor priceFOMOFUDGMHODLMaxiMeme coinMoonNFTNGMINormiePaper handsPFPRektShillSnapshotWAGMIAddress poisoningCold storageCustodyDue diligence (DYOR)Dusting attackExit scamFront runningHardware walletHoneypotHot walletMEVMultisigPhishingPump and dumpRug pullSandwich attackSelf custodySIM swapToken approvalTwo factor authenticationWallet drainerWash tradingAccount abstractionAppchainBlock explorerCirculating and total supplyConsensusData availabilityEVMFaucetFinalityForkFully diluted valuation (FDV)Gas warHalvingLayer 1Layer 2Layer 3MainnetMiningName serviceOptimistic rollupProof of stakeProof of workRollupShardingSidechainSlashingSmart contractStakingTestnetToken standardTokenomicsValidatorZero knowledge proofZK rollupArweave and the permawebComposabilityCross chain messagingdAppDecentralized identity (DID)DePINGameFi and play to earnIndexerInteroperabilityIPFSOnchain and offchainSession keysSmart accountSocialFiSoulbound tokenSybil resistanceToken gatingWeb2 vs Web3Web3
Updated 2026-08-303 min readDefinition
Definition

An automated market maker, which prices trades with a formula instead of an order book.

An AMM holds two or more assets in a pool and quotes prices from a formula. The classic version keeps the product of the two balances constant, so buying one side raises its price automatically.

This was the breakthrough that made onchain trading viable. It needs no counterparty waiting on the other side, just liquidity sitting in a contract.

In practice

In a pool with 10 ETH and 30000 USDC, buying ETH removes ETH and adds USDC, which raises the ETH price for the next buyer.

Where to go next

More defi terms

Back to the full encyclopedia

Want this explained out loud?

Some of these land faster in conversation than in writing. Sessions are one to one and you can ask anything, including the things that feel too obvious to ask.