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vallation

[va-ley-shuh n]
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noun Fortification.
  1. a rampart or entrenchment.
  2. the process or technique of constructing ramparts.
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Origin of vallation

1655–65; < Late Latin vallāt(us) (see vallate) + -iōn- -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for vallation

vallation

noun
  1. the act or process of building fortifications
  2. a wall or rampart
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Word Origin

C17: from Late Latin vallātiō, from vallum rampart
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012