Oxford Dictionary English functional food nounnoun BrE BrE//ˈfʌŋkʃənl fuːd// ; NAmE NAmE//ˈfʌŋkʃənl fuːd// [countable, uncountable] (also nutraceutical) Add to my wordlistjump to other resultsfood that has had substances that are good for your health specially added to itCheck pronunciation: functional food oxfordlearnersdictionaries.com