food that needs little or no processing; (in later use also) a food which contains no additives, a health food.

(originally) food provided by nature; (in later use) food which uses only natural or organically produced ingredients.

Food which has been processed or refined as little as possible, now typically containing no additives or other artificial substances; a food of this…

food chosen for its dietary or health-giving properties.

A foodstuff, food additive, or dietary supplement that has beneficial physiological effects but is not essential to the diet. Also called functiona…

A substance of plant origin which has nutritional value. Also: a nutritional supplement based on such a substance; a nutraceutical.