DeFi Reference
DeFi Glossary
The complete vocabulary for understanding decentralized exchanges, lending protocols, yield strategies, and on-chain market mechanics.
20 termsUpdated: June 21, 2026
A
- AMM
- Automated Market Maker. A smart contract-based system that enables permissionless token trading using a mathematical formula to price assets based on the ratio of tokens in a liquidity pool, replacing traditional order books.
B
- Borrowing
- Taking a loan against deposited collateral in a DeFi lending protocol. Borrowers pay variable interest rates determined by supply and demand. Failure to maintain the required collateral ratio triggers automatic liquidation.
- Bridge
- A cross-chain protocol that enables tokens and data to move between separate blockchain networks. Bridge exploits have been the largest source of DeFi losses, making bridge security a critical evaluation factor.
C
- Collateralization Ratio
- The ratio of collateral value to borrowed value in a lending position. A 150 percent collateralization ratio means $150 of collateral secures $100 of debt. Falling below the protocol minimum triggers liquidation.
D
- DEX
- Decentralized Exchange. A peer-to-peer trading platform built on smart contracts that lets users swap tokens without giving up custody to a central operator. DEXs use AMMs or order books to match trades on-chain.
F
- Fee Tier
- The percentage of each trade paid to liquidity providers on a DEX. Common fee tiers are 0.01 percent for stable pairs, 0.05 percent for correlated assets, 0.3 percent for standard pairs, and 1 percent for exotic tokens.
- Flash Loan
- An uncollateralized loan that must be borrowed and repaid within a single blockchain transaction. Flash loans enable arbitrage, liquidations, and collateral swaps without requiring upfront capital, but fail if not repaid in the same transaction.
G
- Governance
- The process by which token holders vote to change protocol parameters, deploy treasury funds, or upgrade smart contracts. On-chain governance is transparent and auditable; off-chain signaling is faster but less binding.
I
- Impermanent Loss
- The temporary loss in value experienced by liquidity providers when the price ratio of pooled tokens changes. Impermanent loss becomes permanent when LPs withdraw at an unfavorable ratio, and can outweigh fee income in volatile markets.
L
- Lending Protocol
- A DeFi application that allows users to deposit assets and earn interest, or borrow assets by posting collateral. Interest rates adjust algorithmically based on utilization. Aave and Compound are leading examples.
- Liquidation
- The automatic sale of collateral when a borrower’s position falls below the required collateralization ratio. Liquidators receive a bonus for repaying undercollateralized debt, incentivizing rapid action to keep protocols solvent.
- Liquidity Pool
- A smart contract holding a pair of tokens deposited by liquidity providers. Traders swap against the pool, paying fees that accrue to LPs in proportion to their share of the total pool.
- Liquidity Provider
- A user who deposits token pairs into a DEX liquidity pool to earn trading fees. LPs take on impermanent loss risk in exchange for a share of the fees generated by trades against their pool.
O
- Over-collateralization
- The practice of requiring borrowers to deposit more collateral value than the loan amount. Over-collateralization is the primary risk management mechanism in decentralized lending, providing a buffer against price volatility.
P
- Protocol Revenue
- Fees collected by a DeFi protocol from user activity, often split between liquidity providers and a protocol treasury or token buyback. Protocol revenue is a key metric for assessing the economic sustainability of a DeFi project.
S
- Slippage
- The difference between the expected price of a trade and the actual executed price, caused by insufficient liquidity or rapid price movement. High slippage is common in low-liquidity pools and during volatile market conditions.
- Staking
- Depositing tokens into a smart contract to earn rewards in exchange for providing services such as network security, liquidity, or governance participation. Staking yields vary widely based on token emission schedules and demand.
T
- TVL
- Total Value Locked. The aggregate value of assets deposited in a DeFi protocol at a given point in time. TVL is a common measure of protocol adoption, though it can be inflated by recursive deposits and does not directly measure revenue.
V
- Vault
- An automated yield strategy contract that accepts deposits, deploys them across DeFi protocols to maximize returns, and compounds rewards. Vaults abstract complex yield farming strategies into a single deposit interface.
Y
- Yield Farming
- The practice of actively moving assets between DeFi protocols to maximize returns, often by capturing token incentives, trading fees, and interest simultaneously. Yield farming involves smart contract risk and requires active management.
Last updated: June 21, 2026