sievert(redirected from Gigasievert)
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n. Abbr. Sv
The SI unit for the amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays, equivalent to a gray for x-rays.
[After Rolf Maximilian Sievert (1896-1966), Swedish radiologist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Units) the derived SI unit of dose equivalent, equal to 1 joule per kilogram. 1 sievert is equivalent to 100 rems. Symbol: Sv
2. (Units) (formerly) a unit of gamma radiation dose approximately equal to 8.4 × 10–2 gray
[C20: named after Rolf Sievert (1896–1966), Swedish physicist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
A unit used to measure the amount of radiation necessary to produce the same effect on living tissue as one gray of high-penetration x-rays.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.