Definition of high-level
1
: occurring, done, or placed at a high level
2
: being of high importance or rank
- high-level diplomats
3
: of, relating to, or being a computer programming language (such as BASIC or Pascal) which is similar to a natural language (such as English) and in which each statement is translated by a compiler usually into several machine language instructions
4
: relating to or being nuclear waste that contains highly concentrated radioactive components which are environmentally hazardous
