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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
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