geology the movement of the earth's magnetic poles with respect to the geographic poles
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- polar outbreak,
- polar regions,
- polar sequence,
- polar star,
- polar vortex,
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