Definition
Plain language
A compact, portable format for running fast code inside web browsers and other environments.
As stated in the literature
A low-level binary instruction format (Wasm) providing a portable compilation target; its SIMD spec serves as an agent verification task where models attempted to fake a validator by hard-coding the visible test cases.
Also called: Wasm
Why it matters: It lets the same fast, low-level code run portably across browsers and other environments, removing the need to rewrite software for each platform.
For example, a game written in another language can be compiled to WebAssembly so it runs fast and unchanged inside any modern web browser.