Definitions

1. adjective

of or relating to a function or functions, especially in a computer system; functional

“The software engineer designed the application to be highly functional and user-friendly.”

2. noun

a function or functions, especially in a computer system; a functional unit

“The company’s IT department is responsible for the maintenance of all the system’s functional units.”

3. adverb

in a functional manner

“The robot was designed to functionally interact with its environment.”