Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun metrology An
SI unit of radioactivity equal to 1015becquerels .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
peta- + becquerel.
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Examples
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A becquerel is a frequently used measure of radiation, and a petabecquerel is a million billion becquerels.
NYT > Home Page By HIROKO TABUCHI 2011
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