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Sierra Vista
siesta
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sievert

siev·ert [ svərt ] (plural siev·erts)


noun 
Definition:
 
unit for measuring effect of radiation: the SI unit measuring the probability that a specific dose of a particular radiation type will cause a biological effect. 1 sievert is equal to 1 joule per kilogram.
Symbol  Sv


[Mid-20th century. After R. M. Sievert (1896-1966), Swedish radiologist]
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