transfermium element

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trans·fer·mi·um element

 (trăns-fûr′mē-əm, -fĕr′-)
Any of various chemical elements having atomic numbers greater than 100, the atomic number of the element fermium.
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Covering the first 100 elements as well as the transfermium elements (101-112), accessibly written text is supported by extensive cross references, sidebars offering supplemental information, and photos and illustrations, most in color, of pertinent products and places.