• The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.
  • That which fortifies; especially, a work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.
  • An increase in effectiveness, as by adding ingredients.
  • A jagged pattern sometimes seen during an attack of migraine.


  • Borrowed from Middle French fortification, from Late Latin fortificatio, from fortifico, from Latin fortis.

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