Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An artificially produced radioactive element with atomic number 107 whose most long-lived isotopes have mass numbers of 261, 262, and 264 with half-lives of 11.8 milliseconds, 0.1 second, and 0.44 second, respectively. Also called unnilseptium. See Table at element.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A transuranic chemical element (symbol Bh) with an atomic number of 107.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a transuranic element

Etymologies

After Niels Henrik David Bohr.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Surname of Niels Bohr + +‎ -ium (Wiktionary)

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