We don't have synonyms for trace element yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are trace-element and trace elements.
(n) :
(biochemistry, nutrition) A chemical element in an organism’s diet that is required in very small amounts in order to maintain proper biochemical function.
(n) :
(chemistry) A chemical element present in a sample in very small quantities.
(n) :
(biochemistry, nutrition) A chemical element in an organism’s diet that is required in very small amounts in order to maintain proper biochemical function.
(n) :
(chemistry) A chemical element present in a sample in very small quantities.