Buys-Ballot's law

[ bahys-buh-lots ]
/ ˈbaɪs bəˈlɒts /
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noun Meteorology.
the law stating that if one stands with one's back to the wind, in the Northern Hemisphere the atmospheric pressure will be lower on one's left and in the Southern Hemisphere it will be lower on one's right: descriptive of the relationship of horizontal winds to atmospheric pressure.
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The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of Buys-Ballot's law

Named after C. H. D. Buys-Ballot (1817–90), Dutch meteorologist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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British Dictionary definitions for Buys-Ballot's law

Buys Ballot's law
/ (baɪs bəˈlɒts, bɔɪs) /

a law stating that if an observer stands with his back to the wind in the N hemisphere, atmospheric pressure is lower on his left, and vice versa in the S hemisphere

Word Origin for Buys Ballot's law

named after C. H. D. Buys Ballot (1817–90), Dutch meteorologist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012