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Decentralized Finance Publication · DFR

Reference

DeFi glossary

Decentralized Finance Publication’s DeFi glossary gives plain-English definitions for 100+ crypto and DeFi terms — from AMM and DAO to flash loans, perps, and RWA tokenisation. Search or browse by letter for a quick reference. Educational only; not financial advice.

Notice

This glossary is for educational purposes only. Nothing here is financial advice.

112 glossary termsLast updated June 2026

A

9 terms

AMM (Automated Market Maker)

A type of decentralised exchange protocol that uses a mathematical formula — typically x × y = k — to price tokens in a liquidity pool, rather than an order book of buyers and sellers. Users trade directly against the pool. Uniswap, Curve, and Balancer are AMMs.

Full definition

Airdrop

The free distribution of a protocol's governance or utility tokens to wallet addresses that meet specific criteria — typically prior use of the protocol. Uniswap's 2020 airdrop (400 UNI per wallet) and Arbitrum's 2023 airdrop are among the most valuable in DeFi history.

Full definition

Arbitrage

The practice of exploiting price differences for the same asset across different markets. In DeFi, arbitrage bots constantly scan DEXs for price discrepancies and execute trades to profit from the difference, simultaneously normalising prices across platforms.

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Aave

One of the largest DeFi lending protocols, allowing users to deposit assets to earn interest or borrow against crypto collateral. Launched in 2017 as ETHLend and rebranded in 2018. As of 2026, Aave holds tens of billions in total value locked across Ethereum and multiple Layer 2 networks.

Full definition

Airdrop Farming

The practice of strategically using DeFi protocols before their token launches to qualify for a retroactive token airdrop. Airdrop farmers interact with protocols, bridge assets, provide liquidity, and perform governance actions to maximise their airdrop allocation. Notable examples: Uniswap (2020, 400 UNI per user), Arbitrum ARB (2023), and Jupiter JUP (2024).

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Auto-Compound

Automatically reinvesting earned yield rewards back into the same position to earn yield on yield — accelerating growth through compounding. In DeFi, auto-compounding vaults (like those on Yearn or Beefy Finance) claim protocol rewards and reinvest them multiple times per day, significantly improving effective APY vs manual compounding.

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Account Abstraction

A wallet design model where user accounts behave like smart contracts instead of simple key pairs. Also searched as smart accounts or ERC-4337 wallets. Account abstraction enables features such as social recovery, gas sponsorship (paymasters), batching multiple actions, and session keys — reducing seed-phrase friction while keeping self-custody. Widely discussed for mainstream DeFi UX in 2025–2026.

Full definition

APY vs APR

Two ways to quote yield. APR (annual percentage rate) is simple interest without compounding — 10% APR is about 10% over a year if rates hold. APY (annual percentage yield) includes compounding, so the same nominal rate looks higher when rewards compound often. In DeFi, always check whether a dashboard shows APR or APY before comparing products.

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Or jump via A–Z above. Every term also has its own crawlable glossary page.

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