| Subject | English | Spanish |
| environ. | air-borne trace element | oligoelemento transportado por el aire |
| environ. | air-borne trace element | elemento traza atmosférico |
| environ. | air-borne trace element | oligoelemento de origen atmosférico |
| agric. | trace element | microelemento |
| agric. | trace element | micronutrientes |
| econ. | trace element | oligoelemento |
| environ. | trace element | oligoelementos |
| met. | trace element | elementos traza |
| food.ind. | trace element | microelementos |
| environ. | trace element | trazador |
| environ. | trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes | oligoelementos |
| chem. | trace element | micronutriente |
| health., food.ind., chem. | trace element | elemento traza |
| chem. | trace element | elemento vestigial |
| agric. | trace elements | microelementos |
| agric. | trace elements | oligoelementos |
| agric. | trace elements | elementos traza |