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Topic: ELEMENTS

trace element

 noun
     
trace element [countable] technical
1 a chemical element that your body needs a very small amount of to live
2 a chemical element that only exists in small amounts on Earth
Definition of trace element from the Longman Dictionary of Contemporary English within
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aluminium argon arsenic barium base metal bismuth cadmium caesium calcium carbon chlorine chromium cobalt copper element ferrous gold(n) gold(a) golden halogen hydro- hydrogen iodine iridium iron isotope krypton lead lithium magnesium manganese mercury molybdenum nickel nitrogen oxygen phosphorus platinum plutonium potassium precious metal radium radon selenium silicon silver(n) silver(a) sodium strontium tin(n) tin(a) titanium trace element tungsten uranium xenon zinc

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