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solar neutrino unit

American

noun

Astronomy. a unit equal to 10 −36 neutrino captures per second per target atom, used as a measure of the flux of neutrino radiation from the sun. SNU

Etymology

Origin of solar neutrino unit

First recorded in 1965–70

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.