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gravitational interaction

 - 2 dictionary results
gravitational interaction  
n.  A weak, fundamental interaction between two physical objects due to their mass and energy, especially an interaction occurring between elementary particles.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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gravitational interaction

noun
a weak interaction between particles that results from their mass; mediated by gravitons 
WordNet® 3.0, © 2006 by Princeton University.
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