sievert

[ see-vert ]

noun

, Physics.

1. the standard unit in the International System of Units (SI) of dose equivalent having the same biological effect as one joule of x-rays per kilogram of recipient mass (or one gray): : Sv

   The average person receives about 2 to 3 one-thousandths of a sievert per year from naturally occurring radiation in the environment.

sievert

/ ˈsiːvət /

noun

1. the derived SI unit of dose equivalent, equal to 1 joule per kilogram. 1 sievert is equivalent to 100 rems Sv
2. (formerly) a unit of gamma radiation dose approximately equal to 8.4 × 10 ^–2gray

sievert

/ sē′vərt /

1. The SI derived 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 sievert is named after Swedish physicist Rolf Sievert (1896–1966).

Word History and Origins

Origin of sievert¹

Named in honor of Swedish radiologist Rolf Maximilian Sievert (1896–1966)

Word History and Origins

Origin of sievert¹

C20: named after Rolf Sievert (1896–1966), Swedish physicist

Example Sentences

T-Mobile CEO Mike Sievert said the deal will “create a better experience for all of our customers with more coverage and more capacity.”

From Seattle Times

“It’s an extraordinary study,” says Sievert Rohwer, an emeritus curator of birds at the University of Washington’s Burke Museum who was not involved in the research.

From Science Magazine

He developed the new method together with Katrin Sievert, a doctoral student in his research group, and ETH Professor Tobias Schmidt.

From Science Daily

Despite significant uncertainties in their calculations, the researchers' message was clear: "At present, it is not possible to predict which of the available technologies will prevail. It is therefore crucial that we continue to pursue all the options," says Katrin Sievert, lead author of the study, which recently appeared in the journal Joule.

From Science Daily

Lynette Sievert, a biological anthropologist at UMass Amherst, told Salon one concern is that the risks associated with pregnancies, like preterm delivery, increase with age.

From Salon