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dubnium definition

dub·nium (do̵ob′nē əm)

noun

a radioactive chemical element with a very short half-life: a transactinide produced by bombarding californium or berkelium with high-energy nuclear particles: symbol, Db; at. no., 105

Etymology: ModL, after Dubna, Russia, where important work in nuclear physics took place + -ium

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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