functionality Syllabification: (func·tion·al·i·ty)Pronunciation: /ˌfəNGkSHəˈnalətē/Definition of functionality noun 1the quality of being suited to serve a purpose well; practicality:I like the feel and functionality of this bakeware the purpose that something is designed or expected to fulfill:manufacturing processes may be affected by the functionality of the product 2the range of operations that can be run on a computer or other electronic system:new software with additional functionalityfunctionality in other Oxford dictionaries Definition of functionality in the British & World English dictionary