Essential terminology for traders, DeFi users, NFT collectors, and Web3 builders. Each term explained with practical context and real-world examples.
A distribution of free tokens to wallet addresses, typically used to reward early users, generate awareness, or decentralize governance. Notable airdrops include Uniswap (UNI), Optimism (OP), and Arbitrum (ARB).
A protocol that enables the transfer of tokens and data between different blockchain networks. Examples include Wormhole, LayerZero, and Across. Bridges have been frequent targets of exploits.
An organization governed by smart contracts and token-holder votes rather than a centralized authority. Members propose and vote on changes, treasury allocations, and protocol upgrades.
Financial services built on blockchain networks that operate without centralized intermediaries like banks. Includes lending, borrowing, trading, and yield generation protocols like Aave, Uniswap, and Compound.
A cryptocurrency exchange that operates without a centralized intermediary using smart contracts. Users trade directly from their wallets. Examples include Uniswap, SushiSwap, and dYdX.
An uncollateralized loan that must be borrowed and repaid within a single blockchain transaction. Used for arbitrage, collateral swaps, and self-liquidation. If not repaid, the entire transaction reverts.
Transaction fees paid to validators on a blockchain network for processing and confirming transactions. On Ethereum, gas is denominated in gwei. High network congestion leads to higher gas fees.
A misspelling of 'hold' that became crypto slang for holding assets long-term regardless of price volatility. Originated from a 2013 Bitcoin forum post. Represents a buy-and-hold investment strategy.
The temporary loss of funds experienced by liquidity providers when the price ratio of pooled tokens changes. The larger the price divergence, the greater the impermanent loss compared to simply holding the tokens.
Scaling solutions built on top of a Layer 1 blockchain (like Ethereum) to increase throughput and reduce fees. Includes rollups (Optimistic and ZK), state channels, and sidechains like Arbitrum, Optimism, and Base.
A smart contract containing paired token reserves that enable decentralized trading. Liquidity providers deposit tokens and earn a share of trading fees. The foundation of automated market makers (AMMs).
The maximum value that can be extracted from block production beyond the standard block reward and gas fees. Includes strategies like frontrunning, sandwich attacks, and arbitrage by validators or searchers.
A service that provides external real-world data to smart contracts on the blockchain. Chainlink is the dominant oracle network. Critical for DeFi pricing, insurance, and prediction markets.
A type of crypto scam where developers abandon a project and run away with investor funds. Common in DeFi and NFT projects. Warning signs include anonymous teams, locked liquidity absence, and unrealistic promises.
Self-executing code deployed on a blockchain that automatically enforces the terms of an agreement. Powers DeFi protocols, NFT marketplaces, DAOs, and virtually all decentralized applications.
Locking cryptocurrency in a proof-of-stake network to help validate transactions and secure the blockchain. Stakers earn rewards proportional to their stake. Ethereum transitioned to PoS in September 2022.
The economic design and mechanics of a cryptocurrency token including supply, distribution, inflation schedule, utility, and burn mechanisms. Good tokenomics align incentives between users, developers, and investors.
The total amount of crypto assets deposited in a DeFi protocol. Used as a key metric to gauge the size and health of DeFi platforms. Higher TVL generally indicates greater user trust and liquidity.
An individual or entity that holds a very large amount of cryptocurrency. Whale movements can significantly impact market prices. On-chain analytics tools track whale wallets to predict market trends.
The practice of moving crypto assets between DeFi protocols to maximize returns. Farmers earn rewards through trading fees, lending interest, and protocol token incentives. Involves varying levels of risk.
