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Definitions

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

  • n. The International System unit of radioactivity, equal to one nuclear decay or other nuclear transformation per second.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. In the International System of Units, the derived unit of radioactive activity; the activity of a quantity of radioactive material in which one nucleus decays per second. Symbol: Bq

Etymologies

After Antoine Henri Becquerel.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Borrowing from French becquerel. Named after the French physicist Henri Becquerel. (Wiktionary)

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