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Trace elements |
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element /el·e·ment/ (el´ĕ-ment) 1. any of the primary parts or constituents of a thing. 2. in chemistry, a simple substance that cannot be decomposed by chemical means and that is made up of atoms which are alike in their peripheral electronic configurations and so in their chemical properties and also in the number of protons in their nuclei, but which may differ in the number of neutrons in their nuclei and so in their mass number and in their radioactive properties. 3. in the philosophies underlying some complementary medicine systems, a member of a group of basic substances that give rise to everything that exists. five elements 1. see under phase. 2. in ayurvedic tradition, the basic entities (earth, air, fire, water, and space) whose interaction gives rise to material existence. formed elements of the blood the blood cells. trace elements chemical elements distributed throughout the tissues in very small amounts and that are either essential in nutrition, as cobalt, copper, etc., or harmful, as selenium. transposable element see transposon. Trace elements A group of elements that are present in the human body in very small amounts but are nonetheless important to good health. They include chromium, copper, cobalt, iodine, iron, selenium, and zinc. Trace elements are also called micronutrients. Mentioned in: Malabsorption Syndrome 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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