trace element
A chemical element present in very small amounts in a substance, organism, or environment. Common in scientific and nutritional contexts.
We analyzed the trace elements in the soil.
Iron and zinc are trace elements essential for the human body.
micronutrient
Specifically refers to a trace element that is essential for nutrition, often used in biology and health sciences. Compare with 微量要素 (びりょうようそ), a synonym.
See also: 微量要素 (びりょうようそ)
This supplement contains several micronutrients.