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Trace element
Pronunciation
Definition 1
An element found in very small amounts in a given substance. Organisms need certain trace elements to survive. (NCI Dictionary)
Definition 2
Trace elements or dietary minerals are any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes. The term is also used to designate these elements and compounds containing them. (NCI Thesaurus)
Definition 3
A substance the body needs in tiny amounts to grow and stay healthy. Examples are vitamins and minerals. (NCI Dictionary)
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