The chemical symbol for zinc, the essential trace element required for growth and for the activity of hundreds of enzymes. The symbol appears throughout food science: in nutrition tables giving zinc contents of foods, in fortification premix specifications, in analytical reports from atomic absorption or ICP spectrometry, and in chemical formulae of zinc compounds such as zinc oxide and zinc sulphate used in supplements and food additives. Recognising the symbol is basic scientific literacy for reading labels, specifications, and research papers. Its ubiquity reflects zinc’s dual identity as both a vital nutrient and an industrial metal, and in food contexts it almost always signals the nutritional element.