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1. A chemical element present in tiny amounts: trace elements in ground water.
2. A chemical element required in minute quantities by an organism to maintain proper physical functioning.
(Biology) any of various chemical elements, such as iron, manganese, zinc, copper, and iodine, that occur in very small amounts in organisms and are essential for many physiological and biochemical processes
1. any chemical element that is required in minute quantities for physiological functioning.
2. a substance that occurs naturally only in minute amounts in the earth's crust.Also called trace′ min`eral.
An element present in an organism in only very small amounts but essential for normal metabolism. Iodine and cobalt, for example, are trace elements required by humans.
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|Noun||1.||trace element - an element that occurs at very small quantities in the body but is nonetheless important for many biological processes|