nutrient UK /ˈnjuː.tɹi.ənt/US /ˈnuː.tɹi.ənt/adjective 1noun 1forms 3 adjective1 •Providing nourishment. noun1 •A source of nourishment, such as food, that can be metabolized by an organism to give energy and build tissue. formsnutrients · more nutrient · most nutrient