- a chemical element, as iron, copper, zinc, etc., essential in plant and animal nutrition, but only in minute quantities
- any element present in minute quantities in an organism, soil, water, etc.
trace elementtrace element
- A chemical element present in tiny amounts: trace elements in ground water.
- A chemical element required in minute quantities by an organism to maintain proper physical functioning.
(plural trace elements)
- (dietary element): vitamin, trace mineral