Crypto Glossary
Crypto has its own language. And if you have ever tried to read an article about Bitcoin or blockchain and felt completely lost, you are not alone. The jargon can make crypto feel more complicated than it actually is.
This glossary cuts through the noise. Here are 30 of the most important crypto terms explained in plain English, so you can read, research and invest with confidence.
A
Altcoin Any cryptocurrency that is not Bitcoin. Ethereum, Solana, Chainlink and thousands of others are all altcoins. The name comes from “alternative coin.”
ATH (All-Time High) The highest price a cryptocurrency has ever reached. You will often see traders celebrating or tracking when a coin breaks its ATH.
ATL (All-Time Low) The lowest price a cryptocurrency has ever reached.
B
Bitcoin (BTC) The first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the name Satoshi Nakamoto. Bitcoin has a fixed supply of 21 million coins, which is one reason many people see it as a store of value similar to gold.
Blockchain A digital ledger that records all cryptocurrency transactions. Think of it as a shared spreadsheet that thousands of computers around the world all hold a copy of. Once a transaction is recorded, it cannot be changed or deleted.
Bull Market A period when crypto prices are rising and investor confidence is high. The opposite of a bear market.
Bear Market A period when crypto prices are falling, often by 20% or more. Bear markets can last months or even years.
C
Cold Wallet A crypto wallet that is not connected to the internet, making it far more secure than a hot wallet. Hardware wallets like the Ledger are the most popular form of cold storage.
Crypto Exchange A platform where you can buy, sell and trade cryptocurrencies. Binance is the world’s largest crypto exchange by trading volume.
D
DeFi (Decentralised Finance) Financial services — like lending, borrowing and earning interest — that operate without banks or middlemen, using smart contracts on a blockchain instead.
DYOR (Do Your Own Research) A reminder in the crypto community to research any project before investing, rather than relying solely on someone else’s opinion.
F
Fiat Currency Government-issued money like the US dollar, euro or Australian dollar. When people talk about converting crypto to fiat, they mean selling crypto for regular money.
FOMO (Fear of Missing Out) The feeling that drives people to buy a crypto because its price is rising fast and they do not want to be left behind. FOMO-driven decisions are often regretted.
FUD (Fear, Uncertainty and Doubt) Negative or misleading information spread about a cryptocurrency, often to drive the price down.
G
Gas Fees Transaction fees paid on a blockchain network. On Ethereum, these are called gas fees and can vary depending on how busy the network is.
H
HODL A misspelling of “hold” that became a crypto meme and rallying cry. HODLers are long-term investors who hold their crypto through market ups and downs rather than trading in and out.
Hot Wallet A crypto wallet connected to the internet. Convenient for regular transactions but more vulnerable to hacks than a cold wallet.
K
Keys (Private and Public) Your public key is like your bank account number — you share it to receive crypto. Your private key is like your PIN — never share it with anyone. Whoever holds the private key controls the funds.
L
Liquidity How easily a cryptocurrency can be bought or sold without affecting its price. Bitcoin and Ethereum have high liquidity. Smaller coins often have low liquidity, meaning large trades can move the price significantly.
M
Market Cap Short for market capitalisation. It is the total value of all coins in circulation, calculated by multiplying the current price by the total supply. A high market cap generally means a more established, less volatile coin.
Memecoin A cryptocurrency that started as a joke or internet meme. Dogecoin was the first. Some memecoins have made early investors a lot of money. Most have not.
N
NFT (Non-Fungible Token) A unique digital asset stored on a blockchain. Unlike Bitcoin, which is interchangeable, each NFT is one of a kind. NFTs have been used for digital art, music, collectibles and more.
P
Portfolio The collection of cryptocurrencies an investor holds.
Pump and Dump A scheme where a group artificially inflates the price of a coin (the pump) then sells their holdings at the peak (the dump), leaving other investors with losses. Common with low-cap altcoins.
S
Satoshi The smallest unit of Bitcoin. One Bitcoin equals 100 million satoshis. Named after Bitcoin’s creator.
Seed Phrase A set of 12 or 24 random words given to you when you set up a crypto wallet. This phrase is the master key to your funds. Store it offline and never share it with anyone.
Smart Contract A self-executing piece of code stored on a blockchain. It automatically carries out the terms of an agreement when conditions are met, with no middleman required.
Stablecoin A cryptocurrency designed to maintain a stable value, usually pegged to a fiat currency like the US dollar. USDT (Tether) and USDC are the most widely used stablecoins.
T
Token A digital asset built on top of an existing blockchain, rather than having its own. Many DeFi and Web3 projects issue tokens.
V
Volatility The degree to which a price moves up or down over a period of time. Crypto is known for high volatility — prices can move 10% or more in a single day.
W
Wallet Software or hardware that stores your cryptocurrency. It does not actually hold your coins — it holds the private keys that give you access to them on the blockchain.
Web3 The next evolution of the internet, built on blockchain technology. Web3 aims to give users ownership of their data and digital assets, rather than handing that power to large corporations.
Key Takeaways
- Crypto has its own language but the concepts are not as complicated as they first appear
- Understanding terms like blockchain, wallet, private key and market cap will make you a more confident investor
- Always use a secure exchange like Binance to buy your first crypto
- Store your assets safely with a hardware wallet like Ledger once your portfolio grows
- DYOR — do your own research — before investing in any project
Disclaimer: This article is for educational purposes only and does not constitute financial advice. Cryptocurrency investments carry risk. Always do your own research before investing.