1of or having a special activity, purpose, or task; relating to the way in which something works or operates:there are important functional differences between left and right brain
designed to be practical and useful, rather than attractive:she had assumed the apartment would be functional and simple
working or operating:the museum will be fully functional from the opening of the festival
(of a disease) affecting the operation, rather than the structure, of an organ:functional diarrhea
(of a mental illness) having no discernible organic cause:functional psychosis
2 Mathematics of or relating to a variable quantity whose value depends on one or more other variables.
Derivatives
functionally
adverb
[sentence adverb]:functionally, the role of the library service is clearly educational
