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barycentre

British  
/ ˈbærɪˌsɛntə /

noun

  1. a centre of mass, esp of the earth-moon system or the solar system

"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

Other Word Forms

Etymology

Origin of barycentre

C20: from Greek barus heavy + centre

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