Cryptocurrency Glossary
Comprehensive definitions of key terms in the cryptocurrency and blockchain space.
Airdrop
InvestmentA distribution of free tokens to users, often used to reward early adopters or bootstrap networks.
Altcoin
CryptocurrencyAny cryptocurrency other than Bitcoin, often built to explore new features or niches.
APY vs APR
InvestmentAPR is a simple yearly rate, while APY includes compounding effects on returns.
Bitcoin
CryptocurrencyThe first decentralized cryptocurrency, launched in 2009, that uses proof-of-work to secure a peer-to-peer payments network.
Blockchain
TechnologyA distributed ledger that records transactions in linked blocks secured by cryptography, creating an auditable and tamper-resistant history.
Bridge
TechnologyA protocol that moves assets between blockchains, enabling cross-chain activity.
Bridge Risk
SecurityThe security and operational risks involved in moving assets across blockchains.
Cold Storage
SecurityStoring crypto keys offline to reduce exposure to online attacks.
Collateralization Ratio
DeFiThe percentage of collateral backing a loan or stablecoin, used to measure safety margins.
Custodial Wallet
SecurityA wallet where a third party (like an exchange) holds the private keys on your behalf.
Custody
SecurityWho controls private keys for crypto assets—either the user (self custody) or a third party.
DAO
TechnologyA decentralized autonomous organization governed by token holders via on-chain votes.
DApp (Decentralized Application)
TechnologyAn application that runs on a blockchain or decentralized network rather than a centralized server.
DeFi (Decentralized Finance)
DeFiFinancial services built on blockchains that operate without traditional intermediaries like banks.
DEX (Decentralized Exchange)
TradingA crypto exchange that allows users to trade directly from wallets without a central intermediary.
Ethereum
CryptocurrencyA programmable blockchain that supports smart contracts and decentralized applications, with ETH as its native token.
Exchange
TradingA platform where users can buy, sell, or trade cryptocurrencies.
Finality
TechnologyThe point at which a transaction is considered irreversible on a blockchain.
FOMO
TradingFear of Missing Out, the urge to buy quickly to avoid missing a potential rally.
FUD
TradingFear, uncertainty, and doubt, often spread to influence market sentiment.
Funding Rate
TradingA periodic payment between long and short traders in perpetual futures to keep prices aligned with spot.
Gas Fee
TechnologyA transaction fee paid to validators for processing and securing blockchain operations.
Gas Limit
TechnologyThe maximum amount of computational work a transaction is allowed to use.
Halving
CryptocurrencyA scheduled reduction in block rewards on certain chains, notably Bitcoin, which slows new supply.
HODL
TradingA community term meaning to hold crypto long term despite volatility.
Hot Wallet
SecurityA crypto wallet connected to the internet, offering convenience but higher exposure to attacks.
ICO (Initial Coin Offering)
InvestmentA fundraising method where projects sell tokens to early supporters in exchange for capital.
Impermanent Loss
DeFiThe opportunity cost liquidity providers may face when asset prices move in an AMM pool.
KYC/AML
RegulationKnow Your Customer and Anti-Money Laundering checks used by regulated platforms to verify users.
Layer 2
TechnologyA scaling system built on top of a base blockchain to improve speed and reduce costs.
Limit Order
TradingAn order to buy or sell at a specified price or better.
Liquidation
DeFiThe forced closing of a position when collateral value falls below required thresholds.
Liquidity
TradingHow easily an asset can be bought or sold without significantly moving its price.
Liquidity Pool
DeFiA pool of tokens locked in a smart contract that enables trading and yields for liquidity providers.
Market Cap
TradingThe total value of a cryptocurrency, calculated as price multiplied by circulating supply.
Market Order
TradingAn order that executes immediately at the best available price.
MEV (Maximal Extractable Value)
TechnologyThe additional value validators or searchers can extract by reordering or inserting transactions.
Mining
TechnologyThe process of validating transactions and securing a proof-of-work blockchain in exchange for rewards.
NFT (Non-Fungible Token)
NFTsA unique digital asset that represents ownership of an item or piece of content on a blockchain.
Non-Custodial Wallet
SecurityA wallet where you control the private keys, giving you full ownership of your crypto.
Oracle
TechnologyA service that brings external data on-chain, enabling smart contracts to react to real-world events.
Order Book
TradingA list of buy and sell orders for an asset, showing liquidity and price depth.
Private Key
SecurityA secret cryptographic key that grants control over crypto assets and must be kept secure.
Proof of Stake (PoS)
TechnologyA consensus mechanism where validators lock up tokens to propose and validate new blocks.
Proof of Work (PoW)
TechnologyA consensus mechanism where miners compete to solve computational puzzles to secure the network.
Public Key
SecurityA cryptographic key derived from a private key that can be shared to receive funds.
Rollup
TechnologyA Layer 2 system that batches transactions off-chain and posts proofs to a Layer 1 blockchain.
Rug Pull
SecurityA scam where project insiders drain liquidity or abandon a token, leaving holders with losses.
Seed Phrase
SecurityA list of words that backs up a wallet and can restore access to funds if a device is lost.
Self-Custody
SecurityManaging your own private keys, giving you full control and responsibility over crypto funds.
Sidechain
TechnologyA separate blockchain connected to a main chain via a bridge, with its own security model.
Slippage
TradingThe difference between the expected price of a trade and the actual execution price.
Slippage Tolerance
TradingThe maximum price impact a trader is willing to accept when executing a trade.
Smart Contract
TechnologySelf-executing code on a blockchain that runs when predefined conditions are met.
Stablecoin
CryptocurrencyA cryptocurrency designed to maintain a stable value, typically pegged to a fiat currency like the US dollar.
Stablecoin Peg
CryptocurrencyThe mechanism that keeps a stablecoin's value aligned to its target, such as $1.
Stablecoin Reserve
CryptocurrencyAssets backing a stablecoin’s peg, such as cash, short-term treasuries, or crypto collateral.
Staking
InvestmentLocking tokens to help secure a network and earn rewards, common in proof-of-stake systems.
Token
CryptocurrencyA digital asset issued on an existing blockchain, often representing utility, access, or governance.
Tokenomics
InvestmentThe economic design of a token, including supply, distribution, incentives, and utility.
TVL (Total Value Locked)
DeFiThe value of assets deposited in a DeFi protocol, often used as a rough measure of usage.
Validator
TechnologyA network participant that proposes or validates blocks, typically in proof-of-stake systems.
Wallet
SecuritySoftware or hardware that stores the keys used to manage and transact with cryptocurrencies.
Whale
TradingAn individual or entity that holds a large amount of crypto and can influence market prices.
Yield Farming
DeFiA DeFi strategy where users deploy assets across protocols to maximize rewards.