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Noddack

[nŏdăk′]
  1. German chemist who with her husband, Walter Karl Friedrich Noddack (1893-1960), discovered rhenium and an element they called masurium (later named technetium) in 1925.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.