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Swelling may refer to:

  • Swelling (medical), a transient abnormal enlargement of a body part or area not caused by a tumor
  • Die swell, the increase in cross-sectional area of an extrudate after exiting a die
  • Swelling, the increase of volume of material due to absorption of a solvent, common for polymers
  • Neutron-induced swelling, the increasing of volume and decreasing of density of materials subjected to intense neutron radiation

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