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trace element |
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trace element Etymology: L, trahere, to draw, elementum, first principle an element essential to nutrition or physiologic processes, found in such minute quantities that analysis yields a presence of only trace amounts. trace element, n an element essential to nutrition or physiologic processes, found in such minute quantities that analysis yields a presence of virtually none. trace element essential ingredients of the diet of a particular species of animals but the amount required is very small. Includes copper, cobalt, iron, iodine, manganese, molybdenum, selenium and zinc. Chromium, fluorine and silicon are also necessary in some experimental diets but their addition to livestock diets is not considered to be essential. See also macroelement. Called also trace minerals. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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