English: neutraceutical 
Welsh: cynnyrch maethfferyllol
Subject: Bwyd
Welsh definition: A food or part of a food that allegedly provides medicinal or health benefits, including the prevention and treatment of disease. A nutraceutical may be a naturally nutrient-rich or medicinally active food, such as garlic or soybeans, or it may be a specific component of a food, such as the omega-3 fish oil that can be derived from salmon and other cold-water fish.
Welsh context: Gall allbwn y prosesu fod yn unrhyw fath o gynnyrch, er enghraifft, cynhyrchion amaethyddol eraill megis caws, blawd, iogwrt, cynhyrchion bwyd eraill fel prydau bwyd parod, cynhyrchion bwyd anifeiliaid, cynhyrchion bwyd anifeiliaid anwes, cynhyrchion bwyd gweithredol eraill, cynhyrchion maethyllol; a chynhyrchion nad ydynt yn fwyd megis bio-plastigau.
Plural: cynhyrchion maethfferyllol