Mortar

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Mortar has several meanings:

  • Mortar (firestop), a hydraulic cementitious material used to firestop through-penetrations in wall and floor assemblies required to have a fire-resistance rating
  • Mortar (masonry), a material used in masonry to fill the gaps between blocks and bind them together
  • Mortar (weapon), an indirect-fire weapon that fires shells at a much-lower velocity and higher ballistic arc than other ordnance
  • Mortar and pestle, a vessel and implement used to crush or grind materials
  • Mortar methods, discretization methods for partial differential equations
  • Mortarboard, a flattened type of headwear normally worn as part of academic dress

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