The cryptocurrency industry is infamous for its dense jargon and unique slang. Understanding the terminology is the first step to confidently navigating the space. This section covers essential terms from D to F.
DApp (Decentralised Application)
An application built on a blockchain (like Ethereum) that uses smart contracts for its backend logic instead of a centralised server. Users interact with dApps using their crypto wallets.
DAO (Decentralised Autonomous Organisation)
An organisation represented by rules encoded as a transparent computer program (smart contracts), controlled by the organisation's members (token holders) rather than a central leadership team.
DCA (Dollar-Cost Averaging)
An investment strategy where you divide your total investment amount across periodic purchases (e.g., £100 every week) to reduce the impact of volatility on the overall purchase price.
Decentralisation
The transfer of control and decision-making from a centralised entity (individual, corporation, or government) to a distributed network. A core tenet of cryptocurrency.
DeFi (Decentralised Finance)
Financial applications built on blockchain networks that operate without intermediaries. Includes decentralised lending, borrowing, trading (DEXs), and insurance.
DEX (Decentralised Exchange)
A peer-to-peer marketplace where users trade cryptocurrencies directly with one another without handing over custody of their funds to an intermediary. Uniswap is a prominent example.
DYOR (Do Your Own Research)
A common disclaimer and piece of advice in the crypto community, urging investors to investigate a project's fundamentals before investing, rather than relying on social media hype.
Ethereum (ETH)
The second-largest cryptocurrency by market cap and the leading platform for decentralised applications and smart contracts. Introduced programmable money to the blockchain space.
EVM (Ethereum Virtual Machine)
The software environment where all Ethereum accounts and smart contracts live. Many competing blockchains are "EVM-compatible," meaning developers can easily port Ethereum apps over to them.
Exchange
A digital marketplace where you can buy, sell, or trade cryptocurrencies. Can be centralised (Coinbase, Binance) or decentralised (Uniswap).
Farming (Yield Farming)
The practice of putting cryptocurrency to work in DeFi protocols to generate returns (yield), often in the form of newly issued governance tokens. Highly risky but potentially lucrative.
Fiat
Traditional, government-issued currency that is not backed by a physical commodity but by the government's decree. USD, GBP, EUR, and JPY are all fiat currencies.
FOMO (Fear Of Missing Out)
The emotional anxiety that causes investors to buy an asset near its peak price because they see others profiting and fear missing the opportunity.
Fork (Hard / Soft)
A change to a blockchain's protocol rules. A soft fork is backward-compatible. A hard fork is not backward-compatible and results in the blockchain splitting into two separate networks (e.g., Bitcoin and Bitcoin Cash).
FUD (Fear, Uncertainty, and Doubt)
A psychological tactic used in marketing and trading to negatively influence perception of a specific asset or the market as a whole, often by spreading negative, misleading, or false information.