duxelles Syllabification: (dux·elles)Pronunciation: /do͝okˈsel/Definition of duxelles noun a preparation of mushrooms sautéed with onions, shallots, garlic, and parsley and used to make stuffing or sauce:chilies stuffed with duxellesOrigin:named after the Marquis d'Uxelles, a 17th-century French noblemanduxelles in other Oxford dictionaries Definition of duxelles in the British & World English dictionary