Dictionary.com
Thesaurus.com

Larmor precession

American  
[lahr-mawr] / ˈlɑr mɔr /

noun

Physics.
  1. the precession of charged particles, as electrons, placed in a magnetic field, the frequency of the precession Larmor frequency being equal to the electronic charge times the strength of the magnetic field divided by 4π times the mass.


Larmor precession British  
/ ˈlɑːmɔː /

noun

  1. precession of the orbit of an electron in an atom that is subjected to a magnetic field

"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

Etymology

Origin of Larmor precession

1925–30; named after Sir Joseph Larmor (1857–1942), English mathematician