Bytecode definition

An intermediate language that requires a runtime program for execution. For example, the source code of Java and Microsoft's .NET languages is compiled into their particular type of bytecode, which is executed by their runtime engines (see Java and .NET Framework). WebAssembly, which can be used instead of JavaScript routines in Web pages, generates bytecode (see WebAssembly).

(computing) P-code (various forms of instruction sets designed for efficient execution by a software interpreter as well as being suitable for further compilation into machine code)