上QQ阅读APP看书，第一时间看更新
Official definition
The official WebAssembly website (https://webassembly.org) offers this definition:
Wasm is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable target for compilation of high-level languages like C/C++/Rust, enabling deployment on the web for client and server applications.
Let's break that definition down into parts to add some clarification.