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polar bond

A type of covalent bond between two atoms in which electrons are shared unequally. Because of this, one end of the molecule has a slightly negative charge and the other a slightly positive charge. See more at covalent bond.

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Nearby words

  1. polar,
  2. polar angle,
  3. polar axis,
  4. polar bear,
  5. polar body,
  6. polar cap,
  7. polar cataract,
  8. polar circle,
  9. polar coordinate,
  10. polar coordinate system
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.