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English definition of “functional”

functional

adjective uk   /ˈfʌŋk.ʃən.əl/ us  

functional adjective (USEFUL)

B2 designed to be practical and useful rather than attractive: functional clothingUseful or advantageous

functional adjective (WORKING NORMALLY)

(of a machine, system, etc.) working in the usual way: Is the central heating functional yet?FunctioningPerforming a function performing a particular operation: a functional disorder (= when an organ does not work as it should)Suitable and acceptableQuite good, or not very good
(Definition of functional from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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