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trace element

gen. substância mineral em quantidades mínimas da dieta alimentar
agric. micronutriente
econ. oligoelemento
environ. microelementos
health., food.ind., chem. elemento vegetal; microelemento
trace elements ['treɪs'elɪmənts]
environ. oligoelementos
trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes
environ. microelementos