Solidity
Web3 / smart contracts
Solidity is a high-level programming language designed specifically for writing smart contracts on Ethereum and EVM-compatible blockchains, with syntax inspired by JavaScript, C++, and Python. It compiles into EVM bytecode and abstracts away low-level blockchain complexity while remaining statically typed to catch certain errors before deployment. Solidity enables developers to define contract state variables, functions, event logs, and access controls in readable code that the Ethereum compiler transforms into executable bytecode. Since smart contracts are immutable once deployed, Solidity includes careful design patterns for security, including function visibility modifiers, state-changing safeguards, and reentrancy protections.
Example
OpenZeppelin's ERC-20 token standard is written in Solidity, providing a reusable template that defines transfer functions, allowances, and balance tracking that thousands of token projects have adopted and extended.
Why It Matters
Solidity democratized smart contract development by providing an accessible language that abstracts EVM bytecode complexity, enabling a global developer community to build decentralized applications with standardized conventions and proven security patterns.
Definition maintained by Cointegrity. See our editorial policy for review standards on regulatory and compliance terms.
Explore the full Web3 Glossary — 2,094+ expert-curated definitions. Need guidance? Talk to our consultants.